more than one question! Please help me! i have been struggling all day and today i’m on a time limit

Answer:

Step-by-step explanation:

let the amount spent on popcorn be x and amount spent on drinks be y

If the total bill paid is  $17.94, then x+y =  $17.94

If she spend twice as much on popcorn as on drinks, then y = 2x

Substitute y = 2x into the original equation

x+y =  $17.94

x + 2x =  $17.94

3x =  $17.94

x =  $17.94/3

x = $5.98

Since y = 2x

y = 2($5.98)

y = $11.96

Therefore she spent  $5.98 on popcorn and $11.96 on drinks

Answer: 2.44 miles.

Step-by-step explanation:Answer:

2.44 miles

Step-by-step explanation:

Give the following :

Average miles to school = 12 miles per hour

Average Miles from school = 15 miles per hour

Total ride time : ( time to school + time from school) = 22 minutes = (22/60) = 0.3667

Recall:

Speed = distance / Time

Time = distance / speed

Let distance = d

For the scenario described :

d/12 + d/15 = 0.3667

(5d + 4d) / 60 = 0.3667

5d + 4d = 22

9d = 22

d = 22/9

d = 2.44 miles

Answer:

8 cookies

Step-by-step explanation:

64*1.25 = 80 to find how much cookies noah made

if 90%(0.9) were sold, we will find 80(0.1) to find whats left, which is 8

Answer:

Check your mathematics Text book...Then you can see heading True conditional statement..Check the example question then i am sure you will get the correct answer...

Answer:

6

Step-by-step explanation:

I hope this helps!

Answer:         D. 150 hours

Step-by-step explanation:

90 gallons = 1 hour

13,500 gallons = x hours

13,500 / 900 = 150

x = 150 hours

Using the z-distribution, as we are working with a proportion, it is found that samples of 937 should be taken.

A confidence interval of proportions is given by:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which:

The margin of error is given by:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In this problem, we have that:

Then, we solve for n to find the minimum sample size.

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.03 = 1.96\sqrt{\frac{0.675(0.325)}{n}}[/tex]

[tex]0.03\sqrt{n} = 1.96\sqrt{0.675(0.325)}[/tex]

[tex]\sqrt{n} = \frac{1.96\sqrt{0.675(0.325)}}{0.03}[/tex]

[tex](\sqrt{n})^2 = \left(\frac{1.96\sqrt{0.675(0.325)}}{0.03}\right)^2[/tex]

[tex]n = 936.4[/tex]

Rounding up, it is found that samples of 937 should be taken.

More can be learned about the z-distribution at https://brainly.com/question/25890103

Answer: its A

Step-by-step explanation:

Answer: D) The linear model shows a strong fit to the data

The actual strength of the relationship is unknown unless we have the actual values of each data point (so we can compute the correlation coefficient r), but the residuals are randomly scattered about both above and below the horizontal axis. This means we have a fairly good linear fit. If all of the points were above the line, or all below the line, or all residuals fit a certain pattern (eg: parabola), then it wouldn't be a good linear fit.

Answer:

$24

Step-by-step explanation:

1. MULTIPLY: 3 x 56 = 168

2. DIVIDE: 168 / 7 = $24

I hope this helps!

Based on multiplication we have found that 3/7 of $56 is equal to $24.

We are given that the expression 3/7 of $56

To determine 3/7 of $56, we can multiply 3/7 by $56.

Multiply 3/7 by $56:

(3/7) x $56 = (3 x $56) / 7

Calculate the numerator:

3 x $56 = $168

Divide the numerator by the denominator:

$168 / 7 = $24

Therefore, 3/7 of $56 is equal to $24.

Learn more about equations here;

https://brainly.com/question/25180086

#SPJ6

9514 1404 393

Answer:

  {1, 5, 7}

Step-by-step explanation:

For x=0, y = 2·0 +1 = 1

For x=2, y = 2·2 +1 = 5

For x=3, y = 2·3 +1 = 7

The range is the list of y-values, so is {1, 5, 7}.

Work Shown:

C = 2*pi*r

6.28 = 2*3.14*r

6.28 = 6.28r

6.28r = 6.28

r = (6.28)/(6.28)

r = 1

The radius of the circle is 1 yard.

A = pi*r^2

A = 3.14*1^2

A = 3.14

The area is roughly 3.14 square yards.

The area of the trampoline  is mathematically given as

a = 3.14

Question Parameters:

You found one online that has a circumference of 6.28 yards

Generally, the equation for the Circumference   is mathematically given as

C = 2*pi*r

Thererfore

6.28 = 2*3.14*r

r = (6.28)/(6.28)

r = 1

In conclusion, where radius is

[tex]a= pi*r^2[/tex]

a = 3.14*1^2

a = 3.14

Read more about  Arithmetic

https://brainly.com/question/22568180

Answer:

wheres the graph.

Step-by-step explanation:

Answer:

2/3

Step-by-step explanation:

On edg

Complementary angles have sum 90°

[tex]\\ \rm\Rrightarrow 5x+7x-6=90[/tex]

[tex]\\ \rm\Rrightarrow 12x-6=90[/tex]

[tex]\\ \rm\Rrightarrow 12x=96[/tex]

[tex]\\ \rm\Rrightarrow x=8[/tex]

Answer:

x = 8

Step-by-step explanation:

Complementary angles are two angles with measures that sum to 90°

Given:

⇒ m∠C + m∠D = 90°

⇒ 5x + 7x - 6 = 90

⇒ 12x - 6 = 90

⇒ 12x = 96

⇒ x = 8

Answer:

1: $3.40     2: $34.00

Step-by-step explanation:

you take 0.34 and multiply it by how many stamps you have. So in this case you have 10 stamps for #1 so you move the decimal over to the right once (since one step is a tenth) and you have $3.40 and for 100 stamps you restart with 0.34 and move the decimal over to the right twice since that would be one-hundredths, and you would get 34. or when you add the units $34.00

Answer:

33.3 % of the dodgeball team consist of boys.

Step-by-step explanation:

Hope that helps!

Answer:

185

Step-by-step explanation:

Total area is 27 x 10= 270

unshaded are is 17x5= 85

270 - 85 = 185 (total shade area)

Answer:

True

Step-by-step explanation:

Because -5 x -5 = -25

Answer:

61

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

The value of a right angle is 90° and <SQR is a fraction of <PQR.

Hence,  <PQS, which is the other fraction of <PQR, equals 90-50 and 90-50 is 40.

Or we can do it like this;

⇒ 180-90-50

⇒ 90 - 50

⇒ 40

Thus, Answer is 40.

[RevyBreeze]

Answer:

3x^2-12x-63, 7x^2-28x-147

Step-by-step explanation:

I think this problem has two answers.

3(x+3)(x-7), 7(x+3)(x-7)

Answer:

1.63

Step-by-step explanation:

-31 + 7 = -24

[tex]\sqrt{-24}[/tex]  = 4.9

4.9/3 = 1.63 (rounded down from 1.6333333)

Answer:

[tex]x = 2 \sqrt{2} i \: or \: x = - 2 \sqrt{2} i[/tex]

Step-by-step explanation:

• Add 7 to both sides.

[tex]3x {}^{2} - 7 + 7 = - 31 + 7[/tex]

• Simplify

[tex]3x {}^{2} = - 24[/tex]

• Divide both sides by 3

[tex] \frac{3x {}^{2} }{3} = \frac{ - 24}{3} [/tex]

• Simplify

[tex]x {}^{2} = - 8[/tex]

• Find the solution

[tex]x = \sqrt{ - 8} \: and \: x = - \sqrt{ - 8} [/tex]

• Simplify

[tex] \sqrt{ - 8} = 2 \sqrt{2i} [/tex]

[tex] - \sqrt{ - 8} = - 2 \sqrt{2i} [/tex]

ANSWER:

[tex]x = 2 \sqrt{2} i \: and \: x = - 2 \sqrt{2} i[/tex]

Answer:

Then he should have 524,296 books left

Answer:

92%

Step-by-step explanation:

368+32=40

368*100=36800 36800/400=92

Answer:

61.54

Step-by-step explanation:

The decimal is .36 + .18 which is .54 and 17 + 44 is 61 so 61 + .54 is 61.54

[tex]cos(A - B) = cos A cos B + sin A sin B[/tex]

In this case, A is [tex]\frac{\pi }{3}[/tex] and B is [tex]\frac{\pi }{5}[/tex], so:

  [tex]cos\frac{\pi}{3} cos\frac{\pi}{5} +sin\frac{\pi }{3} sin\frac{\pi }{5} =cos(\frac{\pi}{3} -\frac{\pi}{5} ) = cos\frac{2\pi}{15}[/tex]

Hope that helps!

Answer:D

Step-by-step explanation: answer D. 1/4x-1

slope = 1/4 so the coefficent (number attatched to x) is going to be 1/4

y=-1 when x=0

A. =-1/4

B= -1 but the coefficent is not 1/4

C=1

D=-1

D is the correct answer

Answer:

[tex]\sqrt{6} -3\sqrt{2}[/tex]

Step-by-step explanation:

[tex]\sqrt{150} -\sqrt{96} -\sqrt{162} +\sqrt{72}[/tex]

[tex]=\sqrt{25\cdot6} -\sqrt{16\cdot6} -\sqrt{81\cdot2} +\sqrt{36\cdot2}[/tex]

[tex]=\sqrt{25}\sqrt{6} -\sqrt{16}\sqrt{6} -\sqrt{81}\sqrt{2} +\sqrt{36}\sqrt{2}[/tex]

[tex]=5\sqrt{6} -4\sqrt{6} -9\sqrt{2} +6\sqrt{2}[/tex]

[tex]=\sqrt{6} -3\sqrt{2}[/tex]

Answer:

See below.

Step-by-step explanation:

a) √2 + √50 + √98

= √2 + 5√2 + 7√2

= 13√2

c) 5√7 + 2√5 - 3√28

= 5√7 + 2√5 - 6√7

= 2√5 - √7

e) √150 - √96 - √162 + √72

= 5√6 - 4√6 - 9√2 + 6√2

= √6 - 3√2

g) 7√3 - 2√8 + √12 + 3√8

= 7√3 - 4√2 + 2√3 + 6√2

= 9√3 + 2√2

i) 3√49 + 2√288 - √144 - 2√18

= 21 + 24√2 - 12 - 6√2

= 9 + 18√2

= 9(1+ √2)

Answer:

The volume of a prism is given by ...

 V = Bh

Step-by-step explanation:

Here, the base is an equilateral triangle with side length 3 in. The area of such a triangle is given by

 A = (√3)4*s²

where s is the side length.

Your triangular prism has a base area of ...

 B = (√3)/4*(3 in)² = (9/4)√3 in²

so the volume is

 V = ((9/4)√3 in²)(6 in)

 V = (27/2)√3 in³

 V ≈ 23.383 in³

:)

Answer:

  3.9

Step-by-step explanation:

The right triangle is marked with the sides adjacent and opposite the angle. That suggests the relevant trig relation is ...

  Tan = Opposite/Adjacent

  tan(52°) = 5/x

  x = 5/tan(52°) ≈ 3.9