3 years ago

What is a+ 7 if a =2.2

Mathematics

1 answer:

balu736 [363]3 years ago

4 0

Answer: 9.2

Step-by-step explanation:

If a=2.2, we substitute it into the equation, a+7.

2.2+7=9.2

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Out of 230 students, 11% chose gymnastics as their favorite sport. How many students does 11% represent? *

joja [24]

Answer:

Step-by-step explanation:

$11\% \: of \: 230 \\ \\ = \frac{11}{100} \times 230 \\ \\ = 0.11 \times 230 \\ \\ = 25.3 \\ = 25$

Hence 11% represents 25 students.

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3 years ago

what is the rate of change for the linear relationship modeled in the table? x y −1 10 1 9 3 8 5 7 -1/2 0 1/2 2

Vesnalui [34]

Answer:

Rate of change for the linear relationship modeled is $\dfrac{-1}{2}$

Step-by-step explanation:

As the there is a linear relationship in the points, so all these points will be on a single straight line. Hence the slope will be same throughout all the points.

We know that, the slope of the line joining (x₁, y₁) and (x₂, y₂) is,

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Putting the points as (-1, 10) and (1, 9), we get

$m=\dfrac{9-10}{1-(-1)}$

$=\dfrac{9-10}{1+1}$

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Rate of change is the slope of the line joining all these points.

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3 years ago

Read 2 more answers

Y=3/8x−4 write in standard form

Naddik [55]

Answer:

y=3/8x-4
Move the expression to the left
y-3/8x=-4
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8y-3x=-32
Reorder the terms
-3x+8y=-32
Change the signs and standard form is...
3x-8y=32

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3 years ago

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What is an equation of the line that passes through the point (-7,-8) and is

myrzilka [38]

Answer:

all work is shown and pictured