3 years ago

Evaluate the expression when n=-2. n²-8n+7

Mathematics

1 answer:

Afina-wow [57]3 years ago

6 0

Answer:

Step-by-step explanation:

Substitute n = - 2 into the expression

n² - 8n + 7

= (- 2)² - 8(- 2) + 7 = 4 + 16 + 7 = 27

You might be interested in

Show the result of substituting x=0 into 0.75x+1.5y=40

prohojiy [21]

Answer:

y=26.67

Step-by-step explanation:

The given equation is 0.75x+1.5y=40.

We need to show the result of substituting x=0 in above equation.

0.75x+1.5y=40

Put x = 0

0.75(0)+1.5y=40

0+1.5y=40

⇒ 1.5y=4

$y=\dfrac{40}{1.5}\\\\y=26.67$

So, the value of y = 26.67 when x = 0.

8 0

3 years ago

AH PLZ HELP IDK HOW TO DO THIS!!!

spayn [35]

Start by finding the first number on the Y axis,

then find the next number on the x axis, you can move up OR down if you have to

Make sure if your number is a - for instance, (-5, 1) you plot it on the negative 5 one, not the positive five.

8 0

3 years ago

Read 2 more answers

soldi70 [24.7K]

we know that having similar triangles so the ratio of sides,area and volume are same.

$s/s=s^2/s^2$

we know that $s^2$ will be the area of triangle.

$s^2/s^2=75/12$

so $s/s=\sqrt{75/12}$

so the ratio of the perimeter of two triangles will be

$(s+s+s)/(s+s+s)=(\sqrt{75} +\sqrt{75} +\sqrt{75} )/(\sqrt{12}+\sqrt{12} +\sqrt{12} )$

ratio of the perimeter= $\sqrt{225} /\sqrt{36}$

8 0

3 years ago

Read 2 more answers

I need the answer ASAP please

lara [203]

a $\leq$ 7

because 4a + 7 - 7 $\leq$ 35 - 7

equals 4a $\leq$ 28

and 4a/4 $\leq$ 28/4

equals a $\leq$ 7

5 0

3 years ago

Read 2 more answers

50% of games is 10 games.

timurjin [86]

Answer:

20 games

Step-by-step explanation:

3 0

3 years ago