Mathematics College

Please answer this correctly without making mistakes

Answers

Answer 1

1.25 feet (1 foot 3 inches)

Answer 2

Answer:

1 ft 3 in

Step-by-step explanation:

4 + 11 = 15

15 inches in feet is 1 foot 3 inches

Related Questions

does anyone know how to do the rest?

Answers

Answer/Step-by-step explanation:

Given:

[tex] \frac{4}{x} - \frac{3}{y} = 1 [/tex] ---› Equation 1

[tex] \frac{8}{x} + \frac{9}{y} = 7 [/tex] ---› Equation 2

Solution:

✔️Equation 1 × 3:

[tex] \frac{4}{x}*3 + \frac{3}{y}*3 = 1*3 [/tex]

[tex] \frac{12}{x} + \frac{9}{y} = 3 [/tex] ---› Equation 3.

✔️Equation 2 + Equation 3:

[tex] \frac{8}{x} + \frac{9}{y} = 7 [/tex] ---› Equation 2

[tex] \frac{12}{x} + \frac{9}{y} = 3 [/tex] ---› Equation 3.

Thus:

[tex] \frac{-4}{x} = 10 [/tex]

Cross multiply

[tex] 10x = -4 [/tex]

Divide both sides by 10

[tex] x = -\frac{4}{10} [/tex]

[tex] x = -\frac{2}{5} [/tex]

✔️Find y:

Substitute x = -2/5 into equation 1

[tex] \frac{4}{x} - \frac{3}{y} = 1 [/tex] ---› Equation 1

[tex] \frac{4}{\frac{-2}{5}} - \frac{3}{y} = 1 [/tex]

[tex] \frac{4}*{\frac{5}{-2}} - \frac{3}{y} = 1 [/tex]

[tex] -10 - \frac{3}{y} = 1 [/tex]

Add 10 to both sides

[tex] - \frac{3}{y} = 1 + 10 [/tex]

[tex] \frac{-3}{y} = 11 [/tex]

Cross multiply

[tex] 11y = -3 [/tex]

Divide both sides by 11

[tex] y = -\frac{3}{11} [/tex]

There is 1/4 chance of picking a green marble from a bag. IF there are 20 total marbles in the bag, how many marbles must be green?

Answers

Answer:

5 green marbles.

Step-by-step explanation:

20* 1/4 = 5

An automobile manufacturer claims that its van has a 59.1 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 160 vans, they found a mean MPG of 59.5. Assume the variance is known to be 2.89. A level of significance of 0.1 will be used. Find the value of the test statistic. Round your answer to 2 decimal places.

Answers

Answer:

Test statistic Z = 1.8099

Step-by-step explanation:

Step(i):-

Given that mean of the Population (μ) = 59.1 miles/gallon

Mean of the sample (x⁻ ) = 59.5

The standard deviation of the Population = 2.89

mean of the sample (n) = 160

Step(ii):-

Test statistic

[tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]

[tex]Z = \frac{59.5-59.1 }{\frac{2.89}{\sqrt{160} } }[/tex]

Z = 1.8099

Test statistic = 1.8099

Find the volume of the following.
(Round to the nearest tenth if necessary)

Answers

V = 1/3 x B x H

= B = L x W

= V = 1/3 (L x W) H

= V = 1/3 ( 7 x 3 ) 8

= V = 1/3 (21) 8

= V = 1/3 (168 )

= V = 168/3

= V = 56in

Volume = 56!

A car magazine is writing a story about four cars. For each car, the magazine will report the number of miles driven for
different amounts of gas. The table on your right shows the number of miles driven by Car A for different amounts of gas. Car
A uses gas at a constant rate.
How many miles are driven by Car A using 24 gallons of gas?

A: 576 m
B: 550 m
C: 496 m
D: 490 m

Answers

The answer is A because if A uses gas at a constant rate of 24, 24x24=576 which is option A.

The scale factor of the two shapes is 0.5 (or 1/2). True or false? B 32.4 km W 36 km 18 km True False

Answers

Answer: True

Step-by-step explanation:

The scale factor between shapes is the number that when multiplied by the dimensions of the original shape will give the dimensions of the transformed shape.

Likewise when the dimensions of the transformed shape is divided by this number, it will yield the dimensions of the original shape.

The original shape has a length of 36km.

= 36 * 0.5

= 18 km

This proves that 0.5 is the scale factor because when the length of the original shape was multiplied by it, the result was the length of the transformed shape.

Courtney used 25 out of her 30 tickets to select a prize at the arcade.
What is this fraction written as a decimal?

Answers

Answer:

.83333

Step-by-step explanation:

..............

Write the following number in standard form 7.21x10^5

Answers

Answer:

721000

Step-by-step explanation:

Answer:

it's 21000v^7x

What is the solution to the equation 9(x − 1) = 27? (1 point) x = 2.5 x = 0.5 x = −0.5 x = −3.5

Answers

Step-by-step explanation:

Are you sure you wrote the answers correctly?

answer: x=2.5

because i solved it on canvas

The following are the ages (years) of 5 people in a room: 24, 17, 18, 16, 20 A person enters the room. The mean age of the 6 people is now 25. What is the age of the person who entered the room?

Answers

Answer:

The man or woman that entered the room was 55 years of age.

Step-by-step explanation:

If we add up all the ages together, it is 95. When the other person walks in, the mean changes to 25. If you do the math, or if you count, the man or woman that enters is 55, which when added together, gives 150. divided by 6 equals 25.

PLAYGROUND Lukas is walking around the edge of the playground shown. How far will Lukas have walked when he finishes one loop
around the playground? Round to the nearest unit, if necessary.

Answers

Answer:

40 units

Step-by-step explanation:

This question is essentially asking the perimeter of the traingle

We can easily find the sides AC and BA and while you can use the distance formula to find the last side this is a right triange so we will take an easier approach

So because AC has the same y we can very easily figure out how far apart they are by subtracting (or counting) the x values

For me I got AC= 15

AB is kind of the same deal but instead subtract the y value

I got BA= 8

We can now use the a^2+b^2=c^2 formula to get the length of the last side

8^2+15^2=c^2

This means that 289=c^2

2x2 - 3x - 5 = 0

(2x - 5) (x + 1) = 0

PLEASE HELP IM BEING TIMED GOT ONLY THIRTY MINUTES LEFT

Answers

Answer:

All are right except the 4th, 6th, 7th, and 8th

Step-by-step explanation:

I can explain in the comments, I don’t want you to run out of time :)

The following graph indicates a _______________.

a.
2 × 4 factorial design with interaction

b.
4 × 2 factorial design with no interaction

c.
4 × 2 factorial design with interaction

d.
2 × 4 factorial design with no interaction

e.
randomized block design

Answers

Bfh ju yrdfhjjgfjkiytdcbnkl

Determine the number and types of solutions for

6m^2-3m-4=0

Answers

Answer:

2 real solutions

Step-by-step explanation:

Remember this messy thing?

[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

The quadratic formula, as it's called, gives us the roots to any quadratic equation in standard form (ax² + bx + c = 0). The information on the type of roots is contained entirely in that bit under the square root symbol (b² - 4ac), called the discriminant. If it's non-negative, we'll have real roots, if it's negative, we'll have complex roots.

For our equation, we have a discrimant of (-3)² - 4(6)(-4) = 9 + 96 = 105, which is non-negative, so we'll have real solutions, and since quadratics are degree 2, we'll have exactly 2 real solutions.

PLS HELP
PLS HELP
PLE HELP

Answers

Answer:

Step-by-step explanation:

A park started with 12 oak trees, and the number of oak trees increased at a rate of 25% each year. Write the function that models the situation, substituting numerical values for A and r into the expression.

f(x)=A(1+r)X

Answers

Answer:

[tex]f(x) = 12(1.25)^{x}[/tex]

Step-by-step explanation:

The number of oak trees after x years is given by a function in the following format:

[tex]f(x) = A(1+r)^{x}[/tex]

In which A is the initial number of oak trees, and r is the growth rate, as a decimal.

A park started with 12 oak trees

This means that [tex]A = 12[/tex]

The number of oak trees increased at a rate of 25% each year.

This means that [tex]r = 0.25[/tex]

[tex]f(x) = A(1+r)^{x}[/tex]

[tex]f(x) = 12(1+0.25)^{x}[/tex]

[tex]f(x) = 12(1.25)^{x}[/tex]

Totally forgot how to do this, please help.

Answers

Answer:

-2/21 is the answer hope it helps

HELP PLEASE WILL MARK BRANILY

Answers

Answer:

A. Yes because it is

B. I said so

C. Only doing this for the points sorry

Step-by-step explanation:

Answer:

A. Yes, because the confidence level is 63, since 100 - 37 is 63.

B. A 90% confidence level is 10 households out of 100 that have a dog.

C. A 95% confidence level is 5 households out of 100 that have a dog.

Step-by-step explanation:

Confidence level is the total minus the confidence level.

For example, a 50% confidence level of 100 is 50, since 100 - 50 = 50.

Please mark as Brainliest!!!

PLEASE HELP ILL OFFER MONEY I DONT CARE PLEASSEEEEE Mark has $75 to spend on salmon at $5.00 per pound and/or chicken at $3.00 per
pound. If he buys s pounds of salmon and c pounds of chicken, the equation 5s + 30
= 75 must be satisfied. How much salmon did Mark buy if he bought 5 pounds of
chicken?
a) 12 lb
Ob) 16 lb
C) 17 lb
d) 19 lb

Answers

Answer:

a) 12 lb

Step-by-step explanation:

First we find the lb for the chicken

5 * $3 = $15

Then we subtract it from the total amount of money Mark has

75$ - $15 = $60

Mark has 60$ remaining to spend on salmon

60 divided by 5 = 12

So he can buy 12 lb of salmon

Rewrite in simplest terms: 3h - 2(-0.1h - 0.8)
please help

Answers

Answer:

3.2h+1.6

Step-by-step explanation:

3h-2(-0.1h-0.8)

3h+0.2h+1.6

3.2h+1.6

How to tell if y=1/7x is proportional

Answers

Answer:

It is proportional

Step-by-step explanation:

y=Kx

because it crosses the orgin

CRoC=Cop

in 116th congress, the senate consists of 25 women and 75 men. if 3 different senators are randomly selected, what is the probability that they are all men

Answers

Answer

Step-by-step explanation:

75-15=50+3=53

There are 1,043 souvenir paperweights that need to be packed in boxes. Each box will hold 11 paperweights. How many boxes will be needed?

Answers

Answer:

95 will be needed because there are 9 extra paperweights

Step-by-step explanation:

can i get brainliest plz

Answer:

Step-by-step explanation:

99 i think

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