Unit Test Review
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Two points defining a linear function are shown in the table below.
Х
-14
-10
у
-18
-12
What is the slope of the function?
GI
2.
6

Answer:

10

Step-by-step explanation:

a = 5, b = 4, c = 6

[tex]\frac{4a}{2b-c} =\frac{4(5)}{2(4)-6} =\frac{20}{8-6} =\frac{20}{2}=10[/tex]

Answer:

DB...hope I helped!

Step-by-step explanation:

Since m1+m2=180 and m1=76, then m2=104

m2=m4, so m4 is also 104

m3=m1, so it is 76

Hope I helped!

32

Answer:

P= 4+4+16=24 units

Step-by-step explanation:

The triangle is isosceles so <B is congruent to <C. So you can set the measures of these to angles equal to each other and solve for x.

x+6 = 2x -20

26 = 2x-x

26=x

so the measure of <B is 6+26=32

the measure of <C is 2 (26)-20 =32

m<B= 2(BC)

32 = 2(BC)

32   = BC

2

16=BC

m<C=8(AB)

32=8(AB)

32 =(AB)

 8

 4 =AB

Since the triangle is isosceles AC will also be four.

P= 4 +4+16

P=24 unit

Answer:

m=11

Step-by-step explanation:

11-2(3m-10)=5(4-m)

11-6m+20=20-5m

11+20=20+m

11=m

Answer:

90%

Step-by-step explanation:

Step 1: We make the assumption that 50 is 100% since it is our output value.

Step 2: We next represent the value we seek with X.

Step 3: From step 1, it follows that 100%=50.

Step 4: In the same vein, X%=45.

Step 5: This gives us a pair of simple equations:

100%=50(1)

X%=45(2)

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); We have

100%/X% = 50/45

Step 7: Taking the inverse (or reciprocal) of both sides yields

X%/100% = 45/50

X= 90%

Therefore, 45 is 90% of 50.

Answer: 4.00?

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The first one should be 9.

Answer:

3

Step-by-step explanation:

-66557745777!;:-67656yyyyyygdftttyyggggffffffcfffffggggggyyyght

Answer:

-2 and -3

Step-by-step explanation:

-2*-3 is 6 and -2+-3 is -5

On solving the algebraic equations, the two numbers that multiply to be 6 and add up to be -5 are -2 and -3.

An algebraic equation can be defined as a mathematical statement in which two expressions are set equal to each other. The algebraic equation usually consists of a variable, coefficients and constants.

Let the first number be x.

Let second number be y.

Given, x + y = -5

y = -5-x

Also, xy = 6

[tex]x(-5-x) = 6\\\\-5x -x^{2} =6\\\\x^{2} +5x+6 =0\\\\x^{2} +2x+3x+6=0\\\\x(x+2)+3(x+2)=0\\\\(x+2)(x+3)=0\\\\x = -2\ or\ -3[/tex]

Case 1:

x = -2

xy = 6

y = -3

Case 2:

x = -3

xy = 6

y = -2

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Answer:

736

Step-by-step explanation:

Answer:

368 rats

Step-by-step explanation:

First, you find how many times the population doubles. 32/8 = 4, so the population doubles 4 times.

So, the number of rats = 23 * (2^4) = 368

Or, instead of using exponents, you can double the population four times separately.

23 * 2 = 46

46 * 2 = 92

92 * 2 = 184

184 * 2 = 368 rats

P.S. Please give me brainliest, I need it to rank up.

Answer:

First one is function because of the vertical line test.

Second one is not function because 2 have the same x coordinate.

Third one is function because it doesn't have the same x coordinate.

MARK ME BRAINLIEST!

Answer:

Please mark brainlist

Answer:

$6

Step-by-step explanation:

get rid of the vans

 58-40=  18

and split the 18 by 3 (each pair)

 18/3 = 6

Answer:

(−3−1)(2+2)(1+4)

=−80

Step-by-step explanation:

sana po makatulong

Answer:

39, 51

Step-by-step explanation:

I havnt done geometrics in a while, but we can infer AB is the exact same as AD do to the lines stating that amking BD 2 90 degree angles leaving 39 and 51 as the only answer

Answer:

a. $250

b. The total cost for x month is $200 + $50 × x

c. Please see the attached graph

d. Yes, there is a proportional relationship between time and the cost of the cell phone plan

e. $350

Step-by-step explanation:

The given parameters are;

The costs to start on the cell phone cell = $200

The charge each month = $50

a. The total cost to use the cell phone plan for 1 month = Start up fee + Monthly charge = $200 + $50 = $250

b. The total cost for x month, c = $200 + $50 × x

c. Please see the attached graph

d. Yes, there is a proportional relationship between time and the cost of the cell phone plan

e. The line parallel to the line graphed that goes to the point (0, 350), is given as follows;

y = m·x + c

Where;

m = 50

y - 350 = 50 × (x - 0)

y = 50·x + 350

The startup fee is given by the total cost at x = 0, when the monthly fee is excluded, which gives;

c = 50 × 0 + 350 = 350

The startup fee for the pricing plan = $350.

The startup fee and monthly cost for this plan according to the question is :

Part a:

The total cost to use the cell phone plan for 1 month = Start up fee + Monthly charge

Part b:

Please see the attached graph

Part c:

Yes, there is a proportional relationship between time and the cost of the cell phone plan .

Part e:

The line parallel to the line graphed that goes to the point (0, 350), is given as follows;

y = m·x + c

Where;

m = 50 y - 350 = 50 × (x - 0) y = 50·x + 350

The startup fee is given by the total cost at x = 0, when the monthly fee is excluded, which gives;

c = 50 × 0 + 350 = 350

Yes, there is a proportional relationship between time and the cost of the cell phone plan e. $350

The given parameters are; The costs to start on the cell phone cell = $200 The charge each month = $50

The startup fee for the pricing plan = $350.

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Answer:

point slope: y-7=2(x-4

slope intercept: y=2x-1

Step-by-step explanation:

point slope form: y-y1=m(x-x1)

(4,7) and m=2

using all the info here is it in point slope form: y-7=2(x-4)

turning the point slope equation into slope intercept...

slope intercept form: y=mx+b

first simplify y-7=2(x-4) into y-7=2x-8

then add 7 to both sides...

which would be y=2x-1

and thats your answer!!

Answer:

it would by 5/8 or .625

Step-by-step explanation:

1. Liquids have a definite volume, but take the shape of the container.

2.A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical propertiesinclude color, density, hardness, and melting and boiling points. A chemical property describes the ability of asubstance to undergo a specificchemical chang

Answer: 1- liquid

2- chemical property A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction

physical property- A physical property is any property that is measurable, whose value describes a state of a physical system. The changes in the physical properties of a system can be used to describe its changes between momentary states

3- melting point and density

4- solids are closer together; more compacted, move faster

liquids are a little bit far apart; still close together and move a little slower

gases are fart apart; move slower

5- flammability

6-  because they move slower and are more far apart then liquids and solids

7-  I can't see the table :)

Step-by-step explanation:

Answer:

m=change in y/change in x

m=0-4/-2-0

m=-4/-2

m=2

Answer:

zero

Step-by-step explanation:

If you multiply a number by 0, the result is zero

Answer:

The answer is A

Anything multiplied by Zero is Zero

Answer:

Wow that's messed up and was she black or white

Step-by-step explanation:

A.)10.965

byffdddooiy77

===============================================

Explanation:

RS and UV are the first two letters of RST and UVW respectively. So that means RS corresponds to UV to form the ratio RS/UV.

RT and UW are the first and last letters of RST and UVW. So we have RT/UW as another ratio. This ratio is equal to the first ratio we found since the triangles are similar. Similar triangles have their corresponding sides be in proportion with one another.

So we can form this equation

RS/UV = RT/UW

Let's apply substitution and solve for y

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

RS/UV = RT/UW

10/(14.5) = 7/y ...... substitution

10*y = 14.5*7 ........ cross multiply

10y = 101.5

y = 101.5/10 ....... dividing both sides by 10

y = 10.15

Answer:

m=-3

Step-by-step explanation:

f(1)=-(1)^2+3(1)+8=-1+3+8=10

f(5)=-(5)^2+3(5)+8=-25+15+8=-2

m_avg=(f(5)-f(1))/(5-1)=(-2-10)/(5-1)=-12/4=-3

Answer:

I think yes I. not sure I am pretty tired

The number 60 is real and is a rational number since it can be written in the form [tex]\dfrac{p}{q}[/tex].

Given the number 60.

It is required to find whether the number 60 is rational or not.

Rational numbers can be defined as numbers that can be written in the form of fractions, that is [tex]\dfrac{p}{q}[/tex], where p and q must be integers.

If a number is not rational, then it is an irrational number.

Here, the number is 60.

60 can be written in the form [tex]\frac{60}{1}[/tex], [tex]\frac{120}{2}[/tex], [tex]\frac{180}{3}[/tex], ...

That is 60 can be written as the fraction of the integers.

Hence, the number 60 is a rational number.

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Answer:

Undefined

Step-by-step explanation:

The slope equation:

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

Assign positions:

(5,6) = (x1,y1)

(5,-7) = (x2,y2)

Enter into the equation:

[tex]m=\frac{-7-6}{5-5}[/tex]

Simplify:

[tex]m=\frac{-13}{0}[/tex]

So, in this problem, the slope is undefined.

Actually, when you first look at your points you can tell that it is going to be undefined because the x's are the same. If you were to graph it, it would be vertical which always has an undefined slope.

Hope this helped!

Answer:

Basically just add 12 to the hour that you want

Step-by-step explanation:

I'm honestly not sure what you're asking...

but if it was 13 min after 8pm, then it would be 20:13

if it was 18 min after 8pm, then it would be 20:18