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4 years ago

HELP I HAVE TEST TOMORROW :’(( and explanation if possible

Mathematics

1 answer:

Inga [223]4 years ago

3 0

Answer:

I have 2 test too

Step-by-step explanation:

i hate having to do test

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AB = 4 - 5x and BC = 2x+ 25 <br> X= 7

elena-14-01-66 [18.8K]

Answer:

x= - AB-4/5 and No Solution

False for all xER

Step-by-step explanation:

3 0

3 years ago

If the average (arithmetic mean) of 10,20,30,40, and x is 60, what is the value of x

Lilit [14]

60 = (10 + 20 + 30 + 40 + x)/5

300 = 100 + x

x = 200

Answer: 200

8 0

3 years ago

What are the steps to answer -3(2r+7)=3

kumpel [21]

-3(2r+7)=3
distribute -3
-6r-21=3
add 21 to both sides, this causes the 21 on the left to cancel itself out.
-6r=24
divide each side by -6, this causes the -6 on the left side to cancel itself out.
r=-4

3 0

3 years ago

Read 2 more answers

determine the maximum or minimum of the quadratic function. express your answer in the form (x,y) and using decimals rounded to

kolezko [41]

We are given the following quadratic equation

$f(x)=2x^2+7x-10$

The vertex is the maximum/minimum point of the quadratic equation.

The x-coordinate of the vertex is given by

$h=-\frac{b}{2a}$

Comparing the given equation with the general form of the quadratic equation, the coefficients are

a = 2

b = 7

c = -10

$h=-\frac{b}{2a}=-\frac{7}{2(2)}=-\frac{7}{4}=-1.75$

The y-coordinate of the vertex is given by

$\begin{gathered} f(x)=2x^2+7x-10 \\ f(-1.75)=2(-1.75)^2+7(-1.75)-10 \\ f(-1.75)=2(3.0625)^{}-12.25-10 \\ f(-1.75)=6.125^{}-12.25-10 \\ f\mleft(-1.75\mright)=-16.13 \end{gathered}$

This means that we have a minimum point.

Therefore, the minimum point of the given quadratic equation is

$(-1.75,-16.13)$

7 0

1 year ago

Read 2 more answers

Susan bought 15 pounds of flour for 6 dollars how many pounds of flour did per dollar

Temka [501]

Answer:

2.5

Step-by-step explanation:

divide to find unit rate

15/6=2.5

4 0

3 years ago