Mathematics College

My sister got stuck on these can you tell me the answers?

Answers

Answer 1

don’t click the link above it’s a scam. also i think you measure the eraser using a ruler and that’s the answer lol

Related Questions

Evaluate r^2−s^2, when r=12 and s=5.

Answers

Step-by-step explanation:

Given r = 12, s = 5,

[tex] {r}^{2} - {s}^{2} = {12}^{2} - {5}^{2} \\ = 144 - 25 \\ = 119[/tex]

Use the elimination method to solve the system of equations.Choose the correct ordered pair. -x + y -2 , 2x -3y = 4

Answers

Answer:

To use the elimination method one coefficient of either x or y must be the same number with opposite signs, so the ordered pair is (-10, -8)

Step-by-step explanation:

2(-x+y=2) Make one of the coefficients equal, with opposite signs.

2x-3y=4 Combine equations.

-y=8 Solve, y=-8

Then find x, -x-8=2

-x=10, so x= -10

(-10, -8) is your answer.

Maria needs to be at the airport terminal at 18:45. It will take 2 3/4 hours to drive to the airport from her home, and a further 40 minutes to park and get to the terminal.
What is the latest time she should leave home?
Give your answer as a time in the 24-hour clock.

Answers

Answer:

18:45

Step-by-step explanation:

Imagine looking for a certain angle whose cosine is positive and whose sine is negative.

Part 1: Name the two quadrants in which cosine is positive.

Part 2: Name the quadrants in which sine is negative.

Part 3: Use the information in parts a and b to identify the quadrant in which cosine is positive and sine is negative.

Part 4: Write down one angle, in degrees, that has a negative sine and a positive cosine.

Part 5: Using your calculator, confirm your choice by writing the cosine of your angle and the sine of your angle below.

Answers

The two quadrants in which cosine is positive are the first quadrant (Q1) and the fourth quadrant (Q4).

How to explain the information

Part 2: The quadrants in which sine is negative are the third quadrant (Q3) and the fourth quadrant (Q4).

Part 3: Based on the information from parts 1 and 2, the quadrant in which cosine is positive and sine is negative is the fourth quadrant (Q4).

Part 4: One angle that has a negative sine and a positive cosine in the fourth quadrant is 135 degrees (or 3π/4 radians).

Part 5: Using a calculator, we can confirm the values of cosine and sine for 135 degrees:

Cosine of 135 degrees: cos(135°) ≈ -0.7071 (rounded to four decimal places)

Sine of 135 degrees: sin(135°) ≈ -0.7071 (rounded to four decimal places)

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Hi there, hope everyone is well and staying cool :D
Pls can you answer this question!
Brainliest, brainliest, brainliest.................
Pls send me your name first, then i will call you brainliest
The quickest and right answer gets to be brainliest and the rest I will thank you
ENJOY!!!!!!!!

Answers

Answer:

A) By using the Pythagorean Theorem, we will see that [tex]8^2 + 15^2 = 17^2[/tex]. If we simplify it, we will find that the hypotenuse of Δ[tex]ABC = 17[/tex]

B) approximately [tex]18.79[/tex]

Step-by-step explanation:

A) In all honesty, you don't really need to look at ΔACD at all for this one. Just use the Pythagorean Theorem (like previously stated) and solve!

***Pythagorean Theorem is [tex]leg^2 + leg^2 = hypotenuse^2[/tex]

B) Here, you can also use the Pythagorean Theorem! However this time, the equation will be, [tex]8^2 + 17^2 = AD[/tex].

[tex]8^2 + 17^2 = 64 +289[/tex][tex]64 + 289 = 385[/tex][tex]\sqrt{385} \\[/tex] ≈ [tex]18.79[/tex]

Hope you do well on the rest of your math problems :D

solve the equation
3b/7 -1 = 5

Answers

Answer:

b = 14

Step-by-step explanation:

The required solution to the equation 3b/7 - 1 = 5 is b = 14.

What is simplification?

Simplification involves directions of arithmetic and algebra to remove disproportionate terms, factors, or operations from an expression. The goal is to obtain an expression that is easier to work with, manipulate, or solve. For example, simplifying an algebraic expression might involve combining like terms, factoring, or using the distributive property

Here,
To solve for b, we need to isolate b on one side of the equation.

First, we add 1 to both sides of the equation to get:

3b/7 = 5 + 1

Simplifying the right-hand side:

3b/7 = 6

Next, we multiply both sides by 7/3:

(7/3) * (3b/7) = (7/3) * 6

Simplifying:

b = 14

Therefore, the solution to the equation 3b/7 - 1 = 5 is b = 14.

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9. Dawn has 338 peanuts and 13 boxes. If she wants to pack an equal number of peanuts in each box, how many peanuts will there be in each box?NO HACKERS AND I NEED ANSWERS QUICK

Answers

Answer:

26 in each box

Divide the total of 338 peanuts by 13 boxes (338÷13=26)

This solid was created by joining two right rectangular prisms.
7 cm
9 cm
5 cm
4
4 / 3cm
12 cm
Enter the volume of the solid in cubic centimeters.

Answers

Answer: 648

Step-by-step explanation:

Convert 80 liters into gallons. Round your answer to the nearest tenth.

Answers

Answer:

21.13 US gallons

Step-by-step explanation:

. _ .

Answer:

21.1338 rounded to the nearest tenth is 21.10

Step-by-step explanation:

Phoebe is 3 years less than half her brother’s age. Phoebe is 13 years old. Her brother is b years old. Write an equation that could be used to find her brother’s age.
plzzzzzz help

Answers

Answer:

dont know dont care

Step-by-step explanation:

u should pay more attention to what you lesson/teacher is teaching you

The area of a rectangular deck is 680 square feet. The deck's width is 17 feet. What is the length?

Answers

Answer:

Step-by-step explanation: im sorry i dont know how to explain but hope this helps!

Answer:

ik what ur doing

Step-by-step explanation:

thsdpgiojojotnhtofkghbtnkjwalhbwgjknhbwthjgl;n: it is A aka 40 ft

p=. RS. 200, R= 6%per six months. T= 3years

Answers

Answer:

Step-by-step explanation:

200×3×6/100 =36.is the ans

William says that 15years from now his age will be 3 times his age 5 years ago if x represents williams present age complete the following sentences

Answers

Answer:

Is the question complete

someone please help me answer this!!

Answers

Answer:

7.8 mi is the answer.

Step-by-step explanation:

a = 6 mi

b = 5 mi

c = ?

According to the Pythagorean theorem,

a² + b² = c²

6² + 5² = c²

36 + 25 = c²

c² = 61

c = 7.810

Round to the nearest tenth,

c = 7.8 mi

The amount of revenue for a business can be modeled by the function
H(t) = 8400(3)2. Write an equivalent function of the form H(t) = ab'.

Answers

Answer:

Step-by-step explanation:

In the formulae below, make x the subject:
1. a) P = 2mx

Answers

Answer:

x = P/2m

Step-by-step explanation:

x is the subject of the formula, and we can express it as: x = P / (2m)

How make x the subject

To make x the subject in the formula P = 2mx, we can rearrange the equation to isolate x on one side.

Starting with the equation:

P = 2mx

To solve for x, divide both sides of the equation by 2m:

P / (2m) = (2mx) / (2m)

This simplifies to:

P / (2m) = x

Therefore, x is the subject of the formula, and we can express it as:

x = P / (2m)

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Can someone help me?

Answers

no i will not help you

Solve the equation. Find all real solutions.
9r3 - 144r = 0

Answers

Answer:

r=0

Step-by-step explanation:

9r x 3 - 144r = 0

27r-144r=0

-117r=0

r=0

Sarah is going to invest $280 and leave it in an account for 9 years. Assuming the interest is compounded continuously, what interest rate, to the nearest tenth of a percent, would be required in order for Sarah to end up with $410?

Answers

Answer:

4.2%

Step-by-step explanation:

Solve for u. -5u/8=-10

Answers

Answer:

u 16

Step-by-step explanation:

PLS HELP WILL GIVE BRAINLIEST IVE BEEN ASKING FOREVER :(((((

Answers

Answer:

C) 0.36

Step-by-step explanation:

4÷11= 0.36363636363636

so it's 0.36 with a line over it indicating a repeating decimal

You are cutting pieces of fabric for a craft project. You need three pieces that measure 6 2/3 inches, 4 1/2inches, and 3 5/8inches.
What is the total length of fabric that you need ?

Answers

Answer:

You need 14 19/24 inches of fabric

Step-by-step explanation:

We'll need a common denominator between 2/3, 1/2, and 5/8. 24 is the least (lowest) common denominator.

3 x 8 = 24, so we multiply the numerator and denominator by 8 and 6 2/3 becomes 6 16/24ths

2 x 12 = 24, so we multiply the numerator and denominator by 12, and 4 1/2 becomes 4 12/24

8 x 3 = 24, so we multiply the numerator and denominator by 3, and 3 5/8 becomes 3 15/24.

Now we are adding 6 16/24 + 4 12/24 + 3 15/24

6 16/24 + 4 12/24 + 3 15/24 = 6 + 4 + 3 + 16/24 + 12/24 + 15/24

= 13 + 43/24 = 14 19/24

Please lmk if you have questions.

Help please will mark brainliest

Answers

Answer:

9.9

Step-by-step explanation:

4.8 x 2 = 9.6

29.5 - 9.6 = 19.9

19.9/2 = 9.95

round up

9.9

Answer:

10 I think

Step-by-step explanation:

After painting 3/8 of a fence he finds that he has painted 15 feet

Answers

Answer:

whats the question? theres no context other than that little bit

Answer:

The fence is 40 feet long.

Step-by-step explanation:

I suppose the question is "What is the length of the entire fence?"

Formula

3/8 x = 15 Multiply both sides by 8

8*(3/8)x = 15*8 Cancel

3x = 120 Divide by 3

3x/3 = 120/3

x = 40

Solve for x: wx-x=d
w does not equal 1

PLEASE HELP NEED ASAPPP WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWERRRR

Answers

Answer:

x=w/1+yz

Step-by-step explanation:

Hope this helped!

Which of the following functions is graphed below?
15
10
5
o
5
-8
-6
-4
-20
N
4
6
od
.
5

Answers

(15, 10)-00=n4

substitute all the characters and then you will get (-4, 20)

Please help I'll give brainliest

Answers

Answer:

m∠A = 130

Step-by-step explanation:

Here, In a given figure

m∠A = 2x - 30°

Now, we know that the sum of all angle is 180° on a straight line

So,

2x - 30° + 50° = 180°

2x + 20° = 180°

2x = 180° - 20°

2x = 160°

x = 160° ÷ 2

x = 80°

Here, we get the value of x is 80°

Now,

m∠A = 2x - 30°

m∠A = 2(80°) - 30°

m∠A = 160° - 30°

m∠A = 130

Thus, m∠A = 130

-TheUnknownScientist

Which number completes the inequality? 2/3

Answers

Answer: it’s 3/4

Step-by-step explanation: you have to make the Denominator equal for all of them In order to be able to compare. So if you make the denominator equal to 36 you then have to multiply the numerator by the same number you did for the denominator. Once doing that you will find that 24/36 < 27/36 < 28/36

Plz brainliest.

How many years will it take for your salary to be $105,000 per year?

Answers

Depends on the job your asking for

Answer:

simple answer in edmentum

Step-by-step explanation:

Find the GCF of 2m^5 and 28m4
a. 28m^4
b. m^4
c. 2m^4
d. 2m

Answers

i think D would make the most sense

Other Questions

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