Solve for a.

a + (-4) = -13

What is the answer ?

A. a = -17
B. a = -9
C. a = 9
D. a = 17

Answers

Answer 1

Answer:

the answer is B

Step-by-step explanation:

Answer 2

Answer:

-9

Step-by-step explanation:

It is B (-9) because when you have a negative number and answer in an equation like this, all you have to do is add another negative number to get that answer. -9 + -4 = -13


Related Questions

PLEASE HURRY!!!!!!!!! A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as editing) and variable costs (such as printing). The one-time fixed costs will total $35,070 . The variable costs will be $12 per book. The publisher will sell the finished product to bookstores at a price of $20.75 per book. How many books must the publisher produce and sell so that the production costs will equal the money from sales?

Answers

Answer:

12.5x = 54150

x = 54150%2F12.5

x = 4332 books need to be sold to cover production costs

Step-by-step explanation:

Check:

c = 12.50(4332) + 54150

c = 54150 + 54150

c = 108300

Andy runs and eats breakfast every morning before work. When he runs, he bums 160 calories per mile for the first 3 miles. When he runs more than 3 miles, he burns 98 calories per additional mile. On Tuesday morning. Andy runs an additional x miles over 3 miles and then consumes y calories for breakfast. Which of the following functions, f , models the net number of calories Andy has lost after running and eating breakfast on Tuesday morning? A)f(x, y) = 98x – yB)f(x, y) = 160x + 98x – y C)f(x, y) = 480 + 98x + yD)f(x, y) = 480 + 98x – y
Image of page 25

Answers

Answer:

C

Step-by-step explanation:

So you already know you do 480 calories for the first 3 miles so it doesnt need to be multiplied by the X amount of extra miles

Now you burn 98 calories per extra mile so for instance (if you did say 2 miles you would want to multiply 98 calories by 2 cause you burn 98 calories per mile)

Lastly, you just ate Y amount of calories so you need to subtract that from the burned calories cause you just now consumed Y amount of calories

So in conclusion, the answer would be C. f(x, y) = 480 + 98x + y

Solve 2x+7>+x +19
and can you do the same if 2 was 3.

2nd question is write an expression if 3 was open inequality and line continues past negative 5

Answers

Answer:

Step-by-step explanation:

Original problem:

2x + 7 > x + 19

Subtract x from both sides.

x + 7 > 19

Subtract 7 from both sides.

x > 12

Problem with 3 instead of 2.

3x + 7 > x + 19

Subtract x from both sides.

2x + 7 > 19

Subtract 7 from both sides.

2x > 12

Divide both sides by 2.

x > 6

2nd question (I'm not sure I understand it correctly.)

x < 3

Solving 2x + 7 > x + 19

2x + 7 > x + 19

Move 7 by subtracting from both sides.

2x > x + 19 - 7

2x > x + 12

Move x by subtracting from both sides.

2x - x > 12

x > 12

Therefore, x is greater than 12.

Solving 3x + 7 > x + 19

3x + 7 > x + 19

Move 7 by subtracting from both sides.

3x > x + 19 -7

3x > x + 12

Move x by subtracting from both sides.

3x - x > 12

2x > 12

Divide 2 on both sides to get x.

2x/2 > 12/2

x > 6

Therefore, x is greater than 6.

Part 2:

Write an expression for if 3 was open inequality and line continues past negative 5.  This may not be correct due to the vagueness of what it's asking.

Expression: x < -5 < 3

x indicates all real numbers less -5

3 is open inequality and is the greatest

The 2nd question is like really vague.

What is the length of the hypotenuse

Answers

Answer: 97ft

Step-by-step explanation:

Using pythagorean's theorem.

[tex]c^2=a^2+b^2\\c=\sqrt{a^2+b^2}[/tex]

where;

a and b are the sides.

[tex]c=\sqrt{(65ft)^2+(72ft)^2}\\ c=\sqrt{4225ft^2+5184ft^2}\\ c=\sqrt{9409ft^2}\\ c=97ft[/tex]

Yes it’s yes it’s 97 feet

I Point
Which of the following shows the polynomial below written in descending order?
4x^3 + 3x^7 - 9x + x^12

Answers

The polynomial in descending order would be:

x^12 + 3x^7 + 4x^3-9x.

It all has to do with their degrees (exponents).

I don't know what the answer choices are because you didn't post them, but that is the answer.

I hope this helps.

Please help, need an answer ASAP!

Answers

Answer:

6, -7

Step-by-step explanation:

when I followed those instructions, that's what i got.

:)

5-2 ( 4a + 1 ) + 3a= 13

a. a= - 6/5
b. a=2
c. a= 2/3
d. a= -2

Answers

Answer:

a=2/3

Step-by-step explanation:

3(4a+1)+3a=13

12a+3+3a=13

15a+3=13

15a=10

a=2/3

Answer:

-2

Step-by-step explanation:

Just plug -2 into the a spots and them do the math.

Hopes this helps.

A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 35% salt and Solution B is 80%
salt. She wants to obtain 90 ounces of a mixture that is 40% salt. How many ounces of each solution should she use?
Solution A:
Solution B:

Answers

Answer:

80? bc yhu cant use solution a because it only has 35...i think

Step-by-step explanation:

if im wrong sorry

The requried scientist should use 80 ounces of Solution A (35% salt) and 10 ounces of Solution B (80% salt) to obtain a 90-ounce mixture that is 40% salt.

Let's assume the scientist uses x ounces of Solution A and y ounces of Solution B to obtain the desired mixture.

From the information given, we can set up the following equations:

Equation 1: The total amount of solution is 90 ounces, x + y = 90

Equation 2: The amount of salt in the mixture can be expressed as, 0.35x + 0.80y = 0.40 * 90

Simplifying Equation 2:
0.35x + 0.80y = 36

To solve these equations, we can use substitution or elimination. Let's use the substitution method.

From Equation 1, we can express x = 90 - y and substitute it into Equation 2:

0.35(90 - y) + 0.80y = 36

31.5 - 0.35y + 0.80y = 360

45y = 4.5y = 10

Substituting y = 10 back into Equation 1:

x + 10 = 90

x = 80

Therefore, the scientist should use 80 ounces of Solution A (35% salt) and 10 ounces of Solution B (80% salt) to obtain a 90-ounce mixture that is 40% salt.

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Suzanne bought a sweater at the sale price of $29.99. the original cost of the seater was $49.99. what percent represents the discount they suzanne received when buying the sweater?
a: 40% discount
b: 60% discount
c: 50% discount
d: none of the above

NEED HELP ASAP MASTERY GRADE

Answers

Answer:

= 40%

Step-by-step explanation:

Original price = 100%

Discount = Op - Np = $49.99 - $29.99 = $20

If $49.99 = 100%

What about $20 = ?

= (20 x 100) ÷ 49.99

= 2000 ÷ 49.99

= 40.008

= 40%

The reduction in price is:
37.5
%

Original price

$40
Reduced to


$25

Writing this as a fraction of the original price we have
25/40

But this represents the final price.
What we need is the amount of reduction


The price has been reduced by

$40−$25=$15

So as a fraction of the original price the reduction is:
15/40

Converting this to a percentage

Let the unknown value be
x

15/40=x/100


Multiply both sides by 100
15/40×100 = x × 100/100


But 100/100= 1

x = 15/40 × 100 = 37 1/2→37.5 giving: 37.5/100 = 37.5 × 1/100 = 37.5%

Miguel reads about a sea turtle and a manatee. The sea turtle is 3 feet long. The manatee is 4feet times as long as the sea turtle. How long is the manatee??

Answers

The manatee is 12 ft long

Answer:

12 4x3=12

Step-by-step explanation:

If g(x) = x^2, find g (3)

Answers

to find this , just replace the x with the 3
g(3)=3^2
which equals 9

answer: 9

Answer:

g(3)=9

Step-by-step explanation:

We want to find what g(x), or y is, when x is equal to 3.

Therefore, we can substitute 3 in for x in the equation

g(x)=x^2

g(3)=3^2

Evaluate the exponent

g(3)=3*3

g(3)=9

PLEASE HELP! ASAP!!! Suppose you know two angles, angel A and Angle B, are supplementary. The measure of angle A is 5 times the measure of angle B. Find the measures of the angles. Show your work.

Answers

Answer:

B = 30 A= 150

Step-by-step explanation:

There are two unknowns therefore you need two parameters in order to solve.

5B=A

A+B=180

6B=180

B=30

A=150

Simplify the following expression. x^1/3*x^1/5

Answers

I'll teach you how to solve x^1/3*x^1/5

---------------------------------------------------

x^1/3*x^1/5

Apply exponent rule:

x^1/3*x^1/5= x^1/3+1/5

x^1/3+1/5

Add the fractions:

LCM of 3, 5 is 15

5/15 + 3/15

Since the denominators are equal combine the fractions:

5+3/15

Add the numbers 5+3:

5+3= 8

8/15

x^8/15

Your Answer Is x^8/15

plz mark me as brainliest if this helped :)

Find the value of c that makes each trinomial a perfect square.
x² + 3x+c

Answers

Answer:

2

Step-by-step explanation:

Plug in 2 for c in the equation:

x² + 3x + 2

x              2

x              1

(x + 2)(x + 1)

Check. Use the FOIL method:

(x)(x) = x²

(x)(1) = x

(2)(x) = 2x

(2)(1) = 2

x² + x + 2x + 2

Combine like terms:

x² + (x + 2x) + 2

x² + (3x) + 2

2 can be a answer for c.

~

Plane P contains four distinct lines hely, lz, and L. Suppose 4 1 12. lz 1 lg, and lg 1 2. How are 4 and
14 related? Choose the correct answer below.

Answers

Answer:

−11y, −4z, w, 8x

Step-by-step explanation:

81, – 4z, – 1ly, w

(1 point)

0-1ly, - 4z, w, 8z

Ow, – 4z, 81, - lly

O -1ly, - 41, 8z, u

O w, 87, - fly, – 4z


7. For a period of time, an island's population of rabbits grows at a rate proportional to its population. If the
population doubles every 17 years and the current population is 196, what will the population be 45 years from
now?

can someone help me with this? i’m desperate

Answers

Answer:

The answer is 784

Step-by-step explanation:

You divide 17 from 45 it will equal 2.647 years technically 2 year that the population has doubled.

You multiply 196 by 2 and do that a second time to get 784.

Which equation has no solition

Answers

every equation does?

Answer:

Inconsistent equations: No solutions

For instance, 3=3 is a identity equation. A  equation like 3=5 is a conflicting equation, since 3 isn't equivalent to 5. On the off chance that during the time spent tackling a equation you end up with a conflicting equation (accepting you didn't commit an error), at that point the first condition has no arrangements.

Step-by-step explanation:

Complete the equation of the line through (−10,3) (−8,−8). Use exact numbers. y=

Answers

Answer:

y = -11/2x - 52

Step-by-step explanation:

Now follow the equation for slope: m = change in y / change in x.

[tex]\frac{y2-y1}{x2-x1}[/tex]

[tex]\frac{-8-3}{-8--10}[/tex]

[tex]\frac{-11}{2}[/tex]

The slope is -11/2. m=-11/2

Use slope-intercept form:

y=mx+b

Plug in a point and the slope:

-8 = (-11/2)(-8) + b

-8 = 44 + b

b = -52

y = -11/2x - 52

Answer:

-11/2x-52

Step-by-step explanation:

i know it is correct

The bag contains red and white balls.the probability of choosing a red ball is 4/9. Find odds of getting a white ball

Answers

Answer:

well if there are 9 balls and 4 of them are red than the odd of getting a white one is 5/9 which is 55.56%

5/9 chances of getting a white ball

Calculate the volume of the figure. Use 3.14 for π.

Enter your answer as the number of m3, rounded to the nearest hundredth if necessary, like this: 42.53

Answers

Answer:

[tex]586.13\,\,m^3[/tex]

Step-by-step explanation:

Given: Figure

To find: Volume of the figure

Solution:

The given figure is composed of two shapes:cylinder and hemisphere

Radius of cylinder = 4 m

Height of cylinder = 9 m

Volume of cylinder = [tex]\pi (radius)^2height=\pi (4)^2(9)=3.14(16)(9)=452.16\,\,m^3[/tex]

Volume of hemisphere = [tex]\frac{2}{3}\pi (radius)^3=\frac{2}{3}(3.14)(4)^3= \frac{2}{3}(3.14)(64)=133.9733\,\,m^3[/tex]

So,

total volume of the figure = Volume of cylinder + Volume of hemisphere = 452.16 + 133.97 =586.1333 [tex]m^3[/tex]

If 586.1333 is rounded to the nearest hundredth, it becomes 586.13  [tex]m^3[/tex]

Answer:

586.13 is the answer

Step-by-step explanation:

Triangle ABC is isosceles.

Triangle A B C is shown. The lengths of sides A C and A B are congruent. Angle C A B is (x + 5) degrees. Angle A B C is (3 x) degrees.

What is the measure of angle C?

25°
30°
60°
75°

Answers

Answer: 75°

Step-by-step explanation:

Using the Base Angles Theorem, we can conclude that <ABC and <ACB are congruent. The angles of a triangle add up to 180 degrees so we can write this equation to solve for x:

x + 5 + 3x + 3x = 180

simplify

7x + 5 = 180

subtract 5 from both sides

7x = 175

divide each side by 7

x = 25

plug 25 in for x to find the angle measure

3(25) = 75

The measure of angle ∠C would be 75 degrees which is the correct answer would be option (D).

The lengths of sides AC and AB are congruent.

Angle CAB = (x + 5) degrees.

Angle ABC = (3 x) degrees.

What are congruent triangles?

Two triangles are said to be congruent if their corresponding sides and angles are equal.

We may deduce that ABC and ACB are congruent by using the Base Angles Theorem. Because the angles of a triangle sum up to 180 degrees, we may solve for x using this equation:

⇒ x + 5 + 3x + 3x = 180

Rearrange the likewise terms and apply the arithmetic operation,

⇒ 7x + 5 = 180

Subtract 5 from both sides of the above equation,

⇒ 7x = 175

Divide both sides by 7 of the equation,

⇒ x = 25

Since Angle ∠ABC is (3 x) degrees.

Substitute the value of x = 25 to find the angle measure

⇒ Angle ∠C = 3(25) = 75°

Therefore, the measure of angle ∠C would be 75 degrees.

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lily wants to buy a smartphone, she has $500 to spend .list three ways she can get a good deal

Answers

1. Check the prices of phones from different stores.

2. Do some research to see what is the average cost of the phone.

3. Check for possible discounts.

Hope this helps :)

The sum of three consecutive terms of an A.P is 18 and their product is 120. Find the terms?​

Answers

Answer:

2 6 10

Step-by-step explanation:

Which circle is the graph of the equation (x - 3)2 + (y + 4)2 = 9?
Circle A
Circle B
Circle C
Circle D

Answers

Answer:

a circle with center at (h, k) or (3, -4) and radius 3

Step-by-step explanation:

Next time, please share the answer choices.

(x - 3)^2 + (y + 4)^2 = 9 = 3^2

is a circle with center at (h, k) or (3, -4) and radius 3.

Point A is at (-3,-5) and point B is at (2,5).
What is the midpoint of line segment AB?

Answers

Answer:

Step-by-step explanation:

The answer would be -1, 0

The first numbers represent the A axis, so -3-2 = -1

The 2nd number represents the B axis, so 5-5=0

The midpoint of the line segment is (-1/2, 0).

What is midpoint of a line segment?

The midpoint of a line segment is given as,

x = (a + c)/2

y = (b + d) / 2

Where (x, y) is the midpoint and (a, b) and (c, d) are the two endpoints.

We have,

A = (-3, -5) = (a, b)

B = (2, 5) = (c, d)

The midpoint of AB is (x, y).

x = (a + c)/2

x = (-3 + 2)/2

x = -1/2

y = (b + d) / 2

y = (-5 + 5)/2

y = 0/2

y = 0

(x, y) = (-1/2, 0)

Thus,

The midpoint is (-1/2, 0).

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What are all the numbers congruent to #1?

Answers

Answer: All angles are congruient to 1

Step-by-step explanation:

So first of all, that shape is a rectangle. All angles of a rectangle are 90 degrees. So all angles are equal.

Answer: it is 90

Step-by-step explanation: so they are all congruent


MARKING BRAINLIEST
Desiree has a box of grease pencils. 8 are green, 10 are yellow, 9 are brown, and 5 are blue. What is
the probability of Desiree selecting a green grease pencil at random, replacing it back into the box, and
then selecting a yellow grease pencil?
a 5/62
b 18/64
c 5/64
d 6/20

Answers

Step-by-step explanation:

Total marbles = 8 + 9 + 10 + 5 = 32.

Probability of green pencil= 8 / 32 = 1 / 4

Probability of yellow = 10 / 32 = 5 / 16

Enter the equation of the circle with the given center and radius.
Center: (0,3); radius: 3
The equation of the circle is

Answers

Answer:

x² + (y - 3)² = 9

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (0, 3) and r = 3, thus

(x - 0)² + (y - 3)² = 3², that is

x² + (y - 3)² = 9 ← equation of circle

if you flip three fair coins, what is the probability that you’ll get two tails and one head in order?

Answers

Answer:

3/8

Step-by-step explanation:

Answer:

3/8

Step-by-step explanation:

im having a crisis
2] Simplify: √3∙√6

A. √18

B. 3√2

C. 9√2

D. 4.24

3] 2√5∙4√5

Response: __________

4) The simplified form of √1749 is √177.

A. True

B. False

5) Simplify: √24√6

A. cannot be determined

B. √1446

C. 2

D. √6

6) Solve: 3x2 + 12 = 12

Response: __________

Answers

2. A
3. False
4.False
5. D
6. 18
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