PLZ HELP ME

Which expression is a factor of 16x^2-81

I will mark brainliest



A: 8x-9


B: 4x-9


C:8x-81


D: 4x-81

Answer:

70?

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

the anser is 24

Step-by-step explanation:

half of the width is 6cm so the full width of the circle is 12cm and you just multiply the width by 2. thats how you find the diameter of a circle.

Answer:B

Step-by-step explanation: not cause you have trapeziums not c cause you have squares not d cause it just aint

Answer:They are all true statements

Step-by-step explanation:

Answer:

haha yes it's 0 good job!

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

Yes you are right.

also it's "know" not "now".

Responder:

1,78 cm

Explicación paso a paso:

El área de superficie total de la superficie esférica se expresa como;

T = 4πr² donde

r es el radio

Dado

TSA = 40 cm²

Sustituir

40 = 4πr²

r² = 40 / 4π

r² = 10 / π

r² = 10 / 3,14

r² = 3,185

r = √3,185

r = 1,78

por lo tanto, el radio de la esfera a la centésima más cercana es 1,78 cm

Answer:

x=-2

Step-by-step explanation:

5x+4=-6 so basically what you want to do is try to get x by itself

step 1 subtract 4 from each side

5x=-10

step 2 divide each side by 5

x=-2

Answer:

good for him

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

3x + 2y = 7

y = -3x +11

Answer:

-6.1,-6.2,-6.3,-6.4-6.5

Step-by-step explanation:

Trust

Answer:

-6.2, -6.3, -6.4, -6.5, -6.6

Answer:

3/4

Step-by-step explanation:

the numerator of slope (in this case 3) is always y because y rises. in this case, in order to get to the other plot you need to rise three times then run 4. "run" is how many it takes to get to the plot but in the x direction. for example in this case it took 3 rise and 4 run.

Answer:

A) $600

B) $1200

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 10%/100 = 0.1 per year,

then, solving our equation

I = 600 × 0.1 × 10 = 600

I = $ 600.00

The simple interest accumulated

on a principal of $ 600.00

at a rate of 10% per year

for 10 years is $ 600.00.

Answer:

$30

Step-by-step explanation:

x =4(3.45)+1.5(3.98)+2(4.35)+1.53

=13.8+5.97+8.7+1.53

=30

Answer:

20 ounces

Step-by-step explanation:

The line plot is attached below.

From the line plot, we can see that there is a total of 7 snack mix. Two of the snack mix weigh 1 and half (1.5) ounces each, one snack measure 2 and three quarter (2.75) ounce, three snack mix measure three and half (3.5) ounce each and one snack measure 3 and three quarter (3.75) ounce. Therefore the total weight of the snack mix is:

Total weight = (2 * 1.5) + (1 * 2.75) + (3 * 3.5) + (1 * 3.75)

Total weight = 20 ounces

Answer:

Step-by-step explanation:

5x-14=8x+4

-5x. +14    -5x. +14

3x=18

x=6

7x-4=3+8x

-7x. -3   -7x -3

x=-7

Answer: Just re dot the points like mirror it on where ever on the graph  Step-by-step explanation:

I belive that's how it's done

Answer:

11.64

Step-by-step explanation:

100%-> 48

15%-> 7.20

6.25%-> 3

48+7.20+3=58.20

58.20÷5=11.64

Answer:

The Measures of both angles are 144° and 36°

Step-by-step explanation:

Note: We need to find the number of seeds of each color.

Given:

A packet contains blue and yellow flower seeds in the ratio 3:4.

There are 32 flower seeds​.

To find:

The number of blue and yellow flower seeds.

Solution:

Let the number of blue and yellow flower seeds are 3x and 4x respectively.

There are 32 flower seeds​.

[tex]3x+4x=32[/tex]

[tex]7x=32[/tex]

[tex]x=\dfrac{32}{7}[/tex]

[tex]x\approx 4.57[/tex]

Now,

The number of blue flower seeds is

[tex]3(4.57)=13.71\approx 14[/tex]

The number of yellow flower seeds is

[tex]4(4.57)=18.28\approx 18[/tex]

We approx. the value rounded to the nearest integer because the number of flower seeds cannot be a decimal of fractional value.

Therefore, the number of blue seeds is 14 and the number of yellow seeds is 18.

Answer:

3(3x -6)=9x-18

4x +6+3=4x +9

Answer:

im stuck on that too I NEED HELP TOO :((

Step-by-step explanation:

saddddddddddddddddddddd

answer:

D 75.36

explanation:

i did 3.14x12x2

i hope i am right

Answer:

D. 75.36 ft

Step-by-step explanation:

The formula for circumference is C=2TTr.  3.14x12=37.68  37.68x2=75.36

Answer:

i dont know honestly

Step-by-step explanation:

Problem 7

Answers:

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Explanation:

In step 1, there are 2 dots. So that number (2) fills in the blank for dots A.

Step 2 has 5 dots, which fills in the blank for dots B.

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Problem 8

Answer: A) Quadratic

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Explanation:

We have this sequence of dots: {1, 2, 5, 10, ...}

Note the increments of +1, +3, +5, ...

The increments aren't the same, so we don't have a linear sequence. But because the increment amounts go up by 2 each time, this strongly implies a quadratic sequence.

The rule for this sequence is n^2 + 1. Whatever the step number (n) is, we square it and add 1 onto that result. For instance, for step 3, we have n = 3 that leads to n^2 + 1 = 3^2 + 1 = 9 + 1 = 10. Also, note how the lone dot on the left of step 3 is tacked onto the 3 by 3 square of dots.

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Problem 9

Answers:

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Explanation:

Same idea as problem 7

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Problem 10

Answer: B) Exponential

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Explanation:

The sequence is {1, 3, 9, 27, ...}

In step 3 we have 3 rows and 9 columns of dots to give 3*9 = 27 dots total here.

The sequence is growing by a factor of 3 each time. In other words, we are tripling the terms or multiplying each term by 3 to get the next term.

Therefore, we have an exponential pattern.

The rule is 3^n

Eg: if we're on step n = 2, then we have 3^n = 3^2 = 9 dots.

Answer:

See answer below:

Step-by-step explanation:

Blue: y=2x+1

Red: y=3x-2