help! i will mark brainliest!

Answer:

15 females say they use their phone less than an hour a day

36 - 15 = 21 males that use their phone less than an hour a day

(equation above is the total number of students that use their phone less than an hour a day, with the 15 females that do being subtracted from it. that will leave the number of males that use their phone less than an hour a day, which is your answer.)

Answer: 3

Step-by-step explanation: Hope I helped

Answer:

lll

Step-by-step explanation:

*dab

it feels good to know the answer

Answer:

Step-by-step explanation:

D 8(6+4)

Answer:

x= -83.4

830÷50= 16.6

17 coaches would be needed

£5,850

Answer:

x=1660

the value of 830÷50 is 16.6

it will take 5850 to hire 13 coaches

Answer:

y=-2x+6

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

A function never has the same points twice. That's why it failed the vertical line test.

Answer: Your going to have to correct your placing of your numbers.

-12 is value of b for equation 27x²+bx+8=0

A quadratic equation is a second-order polynomial equation in a single variable x , ax²+bx+c=0. with a ≠ 0 .

Given,

One of the roots of the equation 27x² + bx + 8 =0 is known to be the square of the other.

We need to find the value of b.

Let one root is a and the other root is a².

(x-a)(x-a²)=0

x²-xa²-ax+a³=0

x²-x(a²+a)+a³=0

Now multiply by 2

x²-2x(a²+a)+2a³=0

x² + bx + 16=0

2a³=16

Divide both sides by 2

a³=8

a=2

27x²-2x(a²+a)+2a³=0

27x²-2x(4+2)+16=0

27x²-2x(6)+16=0

27x²-12x+16=0

b=-12

Hence, -12 is value of b for equation 27x²+bx+8=0

To learn more on Quadratic equation click:

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Answer:

C, F, D

Step-by-step explanation:

For each side of each triangle, think of the side as the hypotenuse of a right triangle. Then use the Pythagorean theorem to find the length of the hypotenuse, which is the side of the triangle.

Left problem:

From point C to point A, go 2 left and 7 up.

[tex] AC = \sqrt{2^2 + 7^2} = 7.3 [/tex]

From point A to point B, go 5 right and 1 down.

[tex] AB = \sqrt{5^2 + 1^2} = 5.1 [/tex]

From point B to point C, go 6 down and 3 left.

[tex] BC = \sqrt{6^2 + 3^2} = 6.7 [/tex]

Perimeter = 7.3 + 5.1 + 6.7 = 19.1

Do the same for the other triangles.

Middle problem:

From point F to point D, go 2 left and 7 up.

[tex] FD = \sqrt{2^2 + 7^2} = 7.3 [/tex]

From point D to point E, go 7 right and 2 down.

[tex] DE = \sqrt{7^2 + 2^2} = 7.3 [/tex]

From point E to point F, go 5 down and 5 left.

[tex] EF = \sqrt{5^2 + 5^2} = 7.1 [/tex]

Perimeter = 7.3 + 7.3 + 7.1 = 21.7

Right problem:

From point L to point J, go 7 left and 1 up.

[tex] LJ = \sqrt{7^2 + 1^2} = 7.1 [/tex]

From point J to point K, go 4 up and 5 right.

[tex] JK = \sqrt{4^2 + 5^2} = 6.4 [/tex]

From point K to point L, go 2 right and 5 down.

[tex] KL = \sqrt{2^2 + 5^2} = 5.4 [/tex]

Perimeter = 7.1 + 6.4 + 5.4 = 18.9

Answer:

hi

Step-by-step explanation:

I need help on this too

Answer:

first one

Step-by-step explanation:

do i really need an explanation like come on

Answer:

f(0)=2

Step-by-step explanation:

Since x = 0, the function should look like this, f(0) = 2 - 3(0) by plugging in the x.

The next step is simply to get the solution, which should be 2.

9514 1404 393

Answer:

Step-by-step explanation:

The mixed numbers can be expressed as improper fractions in the usual way. The integer portion can be expressed as a multiple of the fraction denominator divided by itself.

Integers can be expressed as a ratio with 1 as the denominator.

1 2/5 = (1×5/5) +2/5 = (5+2)/5 = 7/5

0.3 = three tenths = 3/10

-3 1/4 = -(3×4/4 +1/4) = -(12+1)/4 = -13/4

-27 = -27/1

0 = 0/1

Answer:

AB is parallel to A'B'.

DO,1/2 (1/2x, 1/2y) =

The distance from A' to the origin is half the distance from A to the origin.

Step-by-step explanation:

[tex]\huge\bf\underline{Answer}[/tex]

[tex]\boxed{\huge \sf{TSA = 6a²}}[/tex]

Let the Side of a cube be 'x'

[tex]\sf{:⇒6(x) ^{2} } = 1944cm^{2} [/tex]

[tex]\sf{:⇒ {x}^{2} = \dfrac{1944}{6} }[/tex]

[tex]\sf{:⇒ {x}^{2} = 324}[/tex]

[tex]\sf{:⇒x = \sqrt{324} }[/tex]

[tex]\sf{:⇒x = 18cm}[/tex]

Answer:

5 gallons

Step-by-step explanation:

i have done this lesson before

Answer:

The answer is y=6x+2

Step-by-step explanation:

Answer: c. 6.3

Step-by-step explanation:

Answer:

Step-by-step explanation: 250 miles + 50 miles = 300 miles

300 miles / 5 hours = 60 miles per hour

Answer:

[tex]for \: a \: right \: angled \: triangle \\ (3x + 38) + (4x + 3) + 90 = 180 \\ (4 + 3)x = 180 - (90 + 38 + 3) \\ 7x = 49 \\ x = 7 \\ \\ mZD=(3x + 38) \\ = (3 \times 7) + 38\\ mZD = 59° \\ \\ mZF=(4x+3)° \\ = (4 \times 7) + 3 \\ mZF = 31°[/tex]

Answer:

(A) 11.5 ounces

Step-by-step explanation:

Multiply 3.25 by 4

3.25 x 4 = 13

Subtract 13 from 24.5

24.5 - 13 = 11.5

= 11.5 ounces

Answer:

X = 37

Step-by-step explanation:

A triangles angles add up to 180. You have two of the three. You can do

x + 45 + 98 = 180

then simplify

x + 143 = 180

subtract 143 from both sides

x = 37

Answer:

She can buy 2 pounds per dollar.

Step-by-step explanation:

Answer:

D. 10x - 5

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

Step 1: Define

f(x) = 2x + 5x

g(x) = 3x - 5

(f + g)(x) is f(x) + g(x)

Step 2: Simplify

f(x) = 7x

g(x) = 3x - 5

Step 3: Find