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3 years ago

Sorry my brain is fried...

Mathematics

2 answers:

stiks02 [169]3 years ago

7 0

Answer:

hey.. hi.. emme.. is this morning??? if it is GOOD MORNING ☺️

KiRa [710]3 years ago

4 0

Answer:

1:D,2

2:B:She found that -3(9) is positive

3:D:Evaluated -2^2 as -4

4:Confused, is there supposed to be supplemental info?

Step-by-step explanation:

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Solve and round the answer to the nearest hundredths plz helpppp

Kaylis [27]

Answer:

696.91

Step-by-step explanation:

$V = \frac{4}{3} *\pi *r^3\\= \frac{4}{3}*\pi *5.5^3\\= \frac{4}{3}*\pi *166.375\\=696.9099703\\$

≈ 696.91

7 0

3 years ago

Which function is best represented by this graph?

Reil [10]

Answer:

y= $\frac{2}{7}$ x-2

Step-by-step explanation:

Slope intercept form is a way to describe a function using its slope and y-intercept and is written as y=mx+b.

m=slope

b=y-intercept

Looking at the graph we can see it goes through x=0 at y=-2 making -2 the y-intercept.

Then we must solve for slope, slope is rise/run. From the point (0,-2) the function travels to (7,0).

This gives us a rise (change in x) of 2 and a run (change in y) of 7 and 2/7 as our slope.

4 0

3 years ago

Find a quadratic polynomial whose sum and and product is -7 and -2

vampirchik [111]

Answer:

Step-by-step explanation:

The general form of a quadratic equation with roots a and b is expressed as shown;

x²-(sum of root) x + (product of roots) = 0

x² - (a+b)x + ab = 0 ... 1

Given the sum of roots a+b = -7

Product of roots ab = -2

Substituting this values in equation 1 above wil give;

x²-(-7)x+(-2) = 0

x²+7x-2 = 0

The resulting quadratic polynomial is x²+7x-2 = 0

3 0

3 years ago

If f(3) = 9, what is f(1)<br>

Vaselesa [24]

Answer:

Step-by-step explanation:

3*3=9

1*3=3

8 0

3 years ago

Read 2 more answers

I’ll mark brainliest

enyata [817]

Answer:

$\text{A. }y=1.30x+1.50$

Step-by-step explanation:

The two ringtones will cost her a total of $0.75\cdot 2=1.50$ and is a fixed amount. The relationship between the cost and number of songs only is $y=1.30x$ and therefore the answer is $\boxed{\text{A. }y=1.30x+1.50}$ . You can also directly find the answer by finding the y-intercept (in this case $1.50$ ), as no other answer choices include the term $1.50$ , so A must be the correct answer.

6 0

3 years ago