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2 years ago

Which statement is true about the relation shown on the graph below?

Mathematics

1 answer:

ss7ja [257]2 years ago

5 0

Answer:

b should be the correct one

thank you

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In 25 minutes li can run 10 laps around the track write an equation to represent the relationship

Nonamiya [84]

25 x 10=250 minutes to run.

5 0

2 years ago

Are these figures are similar? If so, what is the scale factor?

tester [92]

Answer:

Yes, the scale factor is 0.6 repeating, or 0.7.

Step-by-step explanation:

You find the scale factor by dividing the smaller sides by the corresponding larger ones.

12/18 = 0.6 repeating

14/21 = 0.6 repeating

16/24 = 0.6 repeating

These triangles could be similar by SSS or SAS or ASA I think since congruent angles are shown in both triangles as well.

8 0

2 years ago

Please help with algebra

Elodia [21]

Let x = small number
y=large numebr

x+y = 90
y-4x=15

substitute
we get:

x=21
y=90-21 = 69

5 0

2 years ago

What is the inverse function of y=x^2-7

Vikentia [17]

With inverse functions you just swap 'x' and 'y' and solve for 'y'.

$\sf y=x^2-7$

Swap 'x' and 'y':

$\sf x=y^2-7$

Add 7 to both sides:

$\sf x+7=y^2$

Take the square root of both sides:

$\sf y=\boxed{\sf\pm\sqrt{x+7}}$

3 0

2 years ago

The phone company NextFell has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of mon

elena55 [62]

Answer:

Explained below.

Step-by-step explanation:

(A)

Use two-point form to determine the equation for the total monthly cost of the NextFell plan.

$(y-y_{1})=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\cdot (x -x_{1})\\\\(y-247)=\frac{247-114}{640-260}\cdot (x-640)\\\\(y-247)=0.35x-224\\\\y=0.35x+23$

(B)

Compute the total monthly cost if 949 minutes are used as follows:

$y=0.35x+23\\\\=(0.35\times 949)+23\\\\=355.15$

Thus. the total monthly cost if 949 minutes are used is $355.15.

7 0

3 years ago