Answer:
13x – 7
Step-by-step explanation:
If "a number represents x", then:
The sum of 4 times a number and - 7, added to 9 times the number = (4x + -7) + 9x.
(4x + -7) + 9x →
(4x + 9x) + -7 →
(13x) + -7 →
(13x) – 7 →
13x – 7.
The unknown number will be equal to 4.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that the sum of 4 times a number and - 7, added to 9 times the number is 45. The value of the unknown number will be calculated as below:-
The sum of 4 times a number and - 7, added to 9 times the number = (4x + -7) + 9x.
(4x + -7) + 9x = 45
(4x + 9x) + -7 = 45
(13x) + -7 = 45
(13x) – 7 = 45
13x – 7 = 45
13x = 45 + 7
13x = 52
x = 4
Therefore, the unknown number will be equal to 4.
The complete question is given below:-
The sum of 4 times a number and - 7, added to 9 times the number is 45. Calculate the value of an unknown number.
To know more about an expression follow
https://brainly.com/question/723406
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What is the measure of angle 1?
Answer:
m < Angle one = 45°
Step-by-step explanation:
Angle one = (2x + 5)
135 + 2x + 5 = 180 (because angle is a straight line)
140 + 2x = 180
(140 - 140) + 2x = 180 - 140
2x = 40
2x/2 = 40/2
x = 20
2x + 5
2(20) + 5
40 + 5
45°
If
A = {a,g,h,q,l,m}
a. How many subsets does
A
have? Be sure to include the calculation you are using.
b. How many proper subsets does
A
have? Be sure to include the calculation you are using.
Answer:
Step-by-step explanation:
A has 6 elements therefore
a) A has [tex] 2^6[/tex] subsets, and
b) A has [tex]2^{6}-1[tex] proper subsets since we dont want the subset to be equal to A itself.
PLEASE HELP WITH THIS ONE QUESTION
Answer:
2nd, 3rd and 4th answers are true
Step-by-step explanation:
[tex]1)false \\ \\ 2)16 {x}^{2} - 64 {y}^{2} \\ {4}^{2} {x}^{2} - {8}^{2} {y}^{2} \\ (4x - 8y)(4x + 8y) = > true \\ \\ 3) {x}^{2} - 169 \\ {x}^{2} - {13}^{2} \\ (x + 13)(x - 13) = > true \\ \\ 4) {9x}^{2} - 1 \\ {3}^{2} {x}^{2} - {1}^{2} \\ (3x - 1)(3x + 1) = > true \\ \\ 5)false[/tex]
f(x) = x - 2
g(x) = x2 + 1
Find (f - g)(2)
-93
-5
9
5
Answer:
(f - g)(2) = -3
Step-by-step explanation:
x - 2 - x2 + 1
2 - 2 - 2^2 + 1
2 - 2 - 4 + 1
0 - 4 + 1
-4 + 1
-3
36 - 8 = 1 + 3
a. true
b. false, 36 = 8 > 1 + 3
c. false, 36. 8 = 1 + 3.6
d. false, 36 = 8 < 1 + 3
Hey there!
36 - 8 = 1 + 3
SOLVING FOR THE LEFT SIDE….
36 - 8
= 28
SOLVING FOR THE RIGHT SIDE….
1 + 3
= 3 + 1
= 4
So, this make your statement [false] because 28 ≠ 4 (Option B.)
The left side is bigger than the right side.
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
6 + [-25 = (-3 + 2. 1)]
Answer:
6+[25=(-0.9)]
6+[-22.5]
-16.5
Step-by-step explanation:
the answe of this question will be -16.5
The generally agreed-upon combination of factors that contribute to modern alcohol use includes:_________
Answer:
People turn to alcohol when they desire to get relief from their anxiety.
HELP
don’t understand
The range of the plotted function is the set of y values that it takes on. The curve is continuous and ranges from y = -2 (at the leftmost point (-11, -2)) up to y = 10 (at the rightmost point (11, 10)).
However, the unfilled circle at the left endpoint means that y = -2 is not actually included in the range.
So the range in this case is -2 < y ≤ 10. (note the strict inequality on the left)
The truth table represents statements p, q, and r.
p q r q ∧ r
A T T T T
B T T F F
C T F T F
D T F F F
E F T T T
F F T F F
G F F T F
H F F F F
If p is false, which row represents when p ∨ (q ∧ r) is true?
E
F
G
H
Answer:
F is the answer .
Step-by-step explanation:
I am not sure
Answer:
A. E
Step-by-step explanation:
Jay went to am amusement park. The park charges an entrance fee of $10.50 and $4.50 for every ride. Jay spent 46.50 on entrance fees and rides. Which function can be used to find the number of rides he went on?
The temperature in Delaware was -8 degrees at midnight, then decreased by 13 degrees. What was the temperature in the morning?
Answer:
-21 degress f
in the morning hope this helped bestie!!
find the value of x
X= 130°
Step-by-step explanation:
From E, draw EF || AB || CD.
Now, EF || CD and CE is the transversal.
So; <DCE + <CEF = 180° [co. int. <s]
x° + <CEF = 180°
<CEF = (180° – x°).
Again, EF || AB and AE is the transversal.
So; <BAE + <AEF = 180° 01 [co. int. <s ]
105° + <AEC+ <CEF = 180°
105° +25° + (180° – x°) = 180°
x° = 130°
I hope I helped you^_^
Emergency funds are important because they
Answer:
an emergency fund allows you to live for a few months if you lose your job or if something unexpected comes up that costs a fair chunk of money to cover
Answer:
If there ever was an emergency you will need money to pay/afford the injury
Step-by-step explanation:
How to write 2.064 in expanded form
Answer:
2= 2
0= 0.0
6= 0.06
4= 0.004
Step-by-step explanation:
) Dan bought 5 new baseball trading cards to add to his collection. The next
day his dog ate half of his collection. There are now only 32 cards left.
How many cards did Dan start with ?
Answer:
Start by writing an equation with a a variable (call it X) to represent the number Dan started with.
He started with X, added 5 more, then his dog took half or divide by 2. He then ended up with 32. Solve:
(X +5)/2 = 32 Multiply each side by 2
X+5 = 64 Subtract 5 from both sides
X = 59
Answer:
59
Step-by-step explanation:
Let the Dan's baseball be x
When 5 added
(x + 5)
Dog ate half
(x + 5)/2
(x + 5)/2 = 32
(x + 5) = 32(2)
x + 5 = 64
x = 64 - 5
x = 59
0.025 (q+2) = 2.81
I need help with this problem
The expression two pi parentheses RH plus R to the power of two parentheses represents the total surface area of a cylinder with height H in radius R what is the surface area of the cylinder with a height of 6 cm and a radius 2 cm
Answer:
100.6cm2
Step-by-step explanation:
The mathematical expression wil become
[tex]2\pi(rh + {r}^{2} )[/tex]
The TSA of a cylinder is
[tex]2\pi \: rh + \pi {r}^{2} + \pi {r}^{2} [/tex]
When simplified, we have
[tex]2\pi \: rh + 2\pi {r}^{2} = 2\pi(rh + {r}^{2} )[/tex]
So indirectly, the expression is the same as total surface area of a cylinder.
So all you have to do is substitute the height and radius into any of the formulas .
[tex]2 \times \frac{22}{7} ( (2 \times 6) + {2}^{2} )[/tex]
[tex]2 \times \frac{22}{7} (12 + 4) \\ 2 \times \frac{22}{7} \times 16 \\ \frac{22 \times 2 \times 16}{7} \\ \frac{22 \times 32}{7} \\ \frac{704}{7} = 100.57 {cm}^{2} \\ = 100.6 {cm}^{2} [/tex]
what is a number to make the comparison true 8.219
Please help I cant do it and it is super late
Two produce stores sell watermelons by the pound.
At Jack's store, he uses the equation y = 0.39x to calculate the cost of a watermelon that
weighs x pounds
At Molly's store, she charges $4.20 for a 12-pound watermelon and $5.25 for a 15-pound
watermelon.
If a watermelon weighs 20 pounds, at which store will the watermelon cost less, and by how
much?
.
A. Jack's store is less expensive by $0.80.
B. Jack's store is less expensive by $0.04.
C. Molly's store is less expensive by $0.80.
D. Molly's store is less expensive by $0.04.
Step-by-step explanation:
have a nice day sir...................
if 3^2x=1, then find the value of x
Answer:
3x^2 -1 =0
a = 3 c = -1 and b = 0
Using the quadratic formula:
x = [-b +- sqr root (b^2 - 4ac)] / 2a
x = [-0 +- sqr root (0^2 - 4*3 *-1] / -2 * 3
x = +- sqr root (12) / -6
x = +2 * sqr root (3) /-6
x1 = + sqr root (3) / -3
x2 = -sqr root (3) / -3
Step-by-step explanation:
plzzzzzzzzz helppppp
Answer:
The second and third boxes. m=-10/4 & -5/2 & the last one
Step-by-step explanation:
We know the answer is negative so we need to add a larger number to get the 3/4 to the negatives. 3-10= -7, so -10/4 and -5/2 is equal to -10/4
Answer:
The second one m= -10/4, the third one m= -5/2, and the last one -5/4+m= -15/4
Step-by-step explanation:
You find m by solving -7/4 - 3/4 = m. Thats the second option -10/4.
When you simplify, you get -5/2, the third option.
Finally, -5/4+m= -15/4 is equal to -15/4 -(-5/4)=m. Subract and you get -10/4. That makes the original equation equal to the last option.
It is good programming style to always use a for loop when the number of times to repeat the action is known. The following code uses a while loop that mimics what a for loop should do. Rewrite it using a for loop that accomplishes exactly the same thing.
myprod = 1;
i = 1;
while i <= 4
num = input('Enter a number: ');
myprod = myprod ⁎ num;
i = i + 1;
end
myprod = 1
num = input("Enter a number: ")
for i in range(1, 5):
myprod *= num
Help me!!!!!!!!!!! Help help help
Answer:
5 × [tex]\frac{1}{100}[/tex]
Step-by-step explanation:
[tex]4*100+2*10+3*1+6*\frac{1}{10}+x+9*\frac{1}{1000}=423.659\\4*100+2*10+3*1+6*0.1+x+9*0.001=423.659\\400+20+3+0.6+x+0.009=423.659\\423.609+x=423.659\\x=0.05\\\\50*\frac{1}{10}=5\\\\5*\frac{1}{100}=0.05\\\\50=50\\\\5*0.05=0.25[/tex]
Using a factor tree find all prime factors of 128
If sin (A + B) = 1 and cos (A - B) = 1, find A, B
Step-by-step explanation:
sin (A + B) = 1 =sin 90
A+B=90 equation 1
cos (A - B) = 1=cos 0
A-B=0 equation 2
add 1 and 2
2A=90 A=45
2B=90 B=45
simplify 3[tex]\frac{2}{5}[/tex]x3([tex]\frac{7}{5}[/tex])
Answer:
3 ^ 9/5
Step-by-step explanation:
Hope it helps!
(–7b + 8c) – (12a + 14) + (5a + 5b)
Answer:
-2b - 7a + 8c - 14
Step-by-step explanation:
-(12a + 14 ) = -12a -14
-7b + 8c - 12a -14 + 5a + 5b
-2b - 7a + 8c - 14
find the common factor of 24 and 48
Answer:
1, 2, 3, 4, 6, 8, 12, and 24
Greatest common factor is 24
Step-by-step explanation:
Answer:
There are 8 common factors of 24 and 48, that are 1, 2, 3, 4, 6, 8, 12, and 24. Therefore, the greatest common factor of 24 and 48 is 24
Step-by-step explanation:
hope it will help you
Please help i will give extra points:)
Answer:
difference is that at night temperature automatically increase so it's -6°F and at afternoon beacuse of sun temperature is high. and overall 12°F.
Step-by-step explanation:
please mark me brainliest