Mathematics College

7th grade math help me pleaseee

Answers

Answer 1

A = 8

B = 50

Step-by-step explanation:

Answer 2

Answer:

A= 2^4= 16

B=10^5=100,000

Step-by-step explanation:

A= 2*2=4*2=8*2=16

B=10*10=100*10=1000*10=10,000*10=100,000

Hope this helps!! Please consider marking brainliest! Have a good one!!

Related Questions

2 with the exponent of 2 ⋅(45÷9) - 3
i need the answer

Answers

Honestly don’t know

What decimal place value is .09 in?? Please

Answers

Answer:

hundresths is correct

Answer:

Step-by-step explanation:

.09 the 9 is hundredth place the 0 is tenth place

Ms. Drevis' garden has lots of apple trees. 120 apples fall on ground in 30 seconds. How many
apples fall in one second?

Answers

Answer:

the answer would be 4

Step-by-step explanation:

because 120 divided by 30 is 4

Answer:4 apples fall per second/ in one second

Step-by-step explanation:

4 x 30 = 120

120 / 30 = 4

Which of the following is equivalent to the expression below? x 6 x 2

Answers

Answer:

Step-by-step explanation:

the answer is D

Kendra was asked to find the number of students who planned to attend the evening symphony performance. She
was told that 40 percent of the 50 students planned to attend. Kendra's work is shown below.
part 40x2 80
whole 100x2 – 200
What mistake did Kendra make?
ОООО
Kendra should have multiplied by 4 instead of multiplying by 2.
O Kendra should have divided by 2 instead of multiplying by 2.
Kendra should have added 40 and 50.
Kendra should have subtracted 40 from 50.

Answers

Answer:

I actually think it’s c I’m sorry if I’m wrong

Step-by-step explanation:

Answer:its B guys not c because kendra should of divde both by 2 and not multiplie it by 2 trust me

Step-by-step explanation:

It is B not A,C,D!

A grocery store sold 250 pounds of fruit in May. This is 5 times more than it sold in January. How many pounds of fruit did the grocery store sell in January?

Answers

Answer:

50 pounds of fruits sold January

Step-by-step explanation:

5X = 250

divude both sides by 5 to get x

x = 50

Steve is looking up at Godzilla with an angle of elevation of 49 degrees. If Steve is 400 feet away, how tall is Godzilla to the nearest foot?

Answers

9514 1404 393

Answer:

460 feet

Step-by-step explanation:

The tangent relates the measures to the angle:

tan(angle of elevation) = (Godzilla height)/(distance away)

tan(49°) = (Godzilla height)/(400 ft)

Godzilla height = (400 ft)(tan(49°)) ≈ 460 ft

Godzilla is 460 feet tall.

Answer:

godzilla is 393 foot tall

Step-by-step explanation:

A medical statistician wants to estimate the average weight loss of people who are on a new diet plan. In a preliminary study, he guesses that the standard deviation of the population of weight losses is about 10 pounds. How large a sample should he take to estimate the mean weight loss to within 2 pounds, with 90% confidence?

Answers

Answer:

Step-by-step explanation:

To get the sample size of the population, we will use the formula for calculating the standard error of the mean. This is expressed as;

SE = zσ/√n

z is the z score at 90% confidence

σ is the standard deviation

n is the sample size

SE is the mean weight loss

Given

z = 1.645

σ = 10

SE = 2

Required

sample size n

Substitute into the given equation;

SE = zσ/√n

2 = (1.645)(10)/√n

2 = 16.45/√n

√n = 16.45/2

√n = 8.225

n = (8.225)²

n = 67.650625

Hence the total sample should be about 68

A 7-foot piece of cotton cloth costs $7.56. What is the price per inch?

Answers

Answer:

$.09 per inch

Step-by-step explanation:

1 foot = 12 inches

Multiply each side by 7

7 ft = 12*7 = 84 inches

Take the cost and divide by the number of inches

$7.56 / 84 inches

$.09 per inch

Answer: 0.09 per inch because multiply that by 12 and thats a foot and multiply that by 7 and you'll get 7.56

Step-by-step explanation:

Which expression shows 0.027 written in expanded form?
A
(2 x 10) + (7 X 1)
B.
(0 + 2 + 7) X 0.001
С
(2 x 0.1) + (7 x 0.01)
D
(2 x 0,01) + (7 % 0,001)

Answers

Answer:

D. (2 x 0,01) + (7 % 0,001)

Answer:

jhghgfg

Step-by-step explanation:

An equation is a mathematical statement composed of algebraic and/or numeric expressions set equal to each other.

True
False

Answers

Answer:

True,

Definition of equation for you: a statement that the values of two mathematical expressions are equal (indicated by the sign =).

Jasmine bought 3 chocolates for Dhs.12.34 and her brother Alan bought 2 packets of biscuits for Dhs 3.5 each. How much they paid in total?

Answers

Answer:

$39.02

Step-by-step explanation:

$12.34 *3=37.02

$3.5*2=7

37.02+7=39.02

What is the distance between A and B on the number line below?
On a number line, point A is at 2.15 and point B is at 2.7.
0.55
0.65
2.48
4.85

Answers

Answer:

0.55

Step-by-step explanation:

all you do is subtract

1. Evaluate 4x' + 7xy - 5y for x = 5, and y = 3.

Answers

Answer:

110 is your answer

A quantity with an initial value of 920 decays exponentially at a rate of 85% every week. What is the value of the quantity after 21 days, to the nearest hundredth?

Answers

Answer:

≈3.11

Step-by-step explanation:

The value of the quantity after 21 days, to the nearest hundredth, given the expoenential decay is 3.11.

What is the value of the quantity after 21 days?

When a quantity decays , it means that the value of the quantity declines with the passage of time.

The formula that can be used to determine the value of the quantity after a number of weeks is :

FV = P (1 - r)^n

Where:

FV = Future valueP =initial valueR =rate of decayN = number of weeks = 21/7 = 3 weeks

920 x (1 - 0.85)^3

920 x 0.15^3 = 3.11

To learn more about exponential function, please check: brainly.com/question/18760477

2.6x 0.47 pls show your work I need help

Answers

Answer:

2.6 x 0.47 = 1.222

Step-by-step explanation:

What is the result of 5 divided by one-fifth? 5 fraction bars. Each bar is labeled 1 with 5 boxes labeled one-fifth underneath. StartFraction 1 Over 25 EndFraction One-fifth 1 25

Answers

Answer:

Step-by-step explanation:

Answer:

it is 25

Step-by-step explanation:

Erin has quarters and nickels for a total of 16 coins. The value of his coins is $2.60. Let represent the number of quarters and y represent the number of nickels

Answers

Note: Consider we need to find each type of coins he has.

Given:

Erin has quarters and nickels for a total of 16 coins.

The value of his coins is $2.60.

To find:

The number of each type of coins.

Solution:

Let x represent the number of quarters and y represent the number of nickels.

According to the question,

Total coins : [tex]x+y=16[/tex] ...(i)

Total value : [tex]0.25x+0.05y=2.60[/tex] ...(ii)

Multiply equation (i) by 0.25 and subtract the result from (ii).

[tex]0.25x+0.05y-0.25(x+y)=2.60-0.25(16)[/tex]

[tex]0.25x+0.05y-0.25x-0.25y=2.60-4[/tex]

[tex]-0.20y=-1.40[/tex]

Divide both sides by -0.20.

[tex]y=7[/tex]

Put y=7 in (i).

[tex]x+7=16[/tex]

[tex]x=16-7[/tex]

[tex]x=9[/tex]

Therefore, the number of quarters is 9 and number of nickels is 7.

When asked about favorite Thanksgiving leftovers, 9% of the people said turkey and 7/100 said mashed potatoes. Which food is more popular? How do you know?

Answers

Answer:

Turkey is more popular.

Step-by-step explanation:

If in the survey about which is the favorite food on Thanksgiving, 9% answered turkey and 7/100 answered marshed potatoes, the most popular food among both is turkey.

This is so because in the case of marshed potatoes, the fact that 7 out of 100 choose this food implies that 7% of those surveyed designate it as their favorite, which is less than the 9% who choose turkey as such.

Which expressions are equivalent to -7+3(-4e-3)
A.) -4(3e+4)
B.) 12e
C.) None of the above.
GIVING BRAINLIEST!
*URGENT*

Answers

Answer:

The answer is letter A.

-7+3(-4e-3)

−7+3((−4)(2.718282)−3)

=−48.619382

-4(3e+4)

−4((3)(2.718282)+4)

=(−4)((3)(2.718282)+4)

=(−4)((3)(2.718282))+(−4)(4)

=−32.619382−16

=−48.619382

PLLLLLZZZZZ HEEEEEELP
leaves on deciduous trees turn bright colors in the fall due to:

a
Chemicals in the leaf
b
nutrients getting cut off by the tree to the leaves
c
Cold weather
d
too much water

Answers

Answer:

a i think

Step-by-step explanation:

B is the answer I think

A taxi driver earned $70.04 one night and then bought himself a meal for $19.98.
How much did he have left over, to the nearest dollar?

Answers

Answer: $50

Step-by-step explanation:

Rounding the numbers, you get 70-20, which equals $50

536-248 answer and show your work

Answers

Answer:

288

Step-by-step explanation:

288+248=536

Find the slope of the line that passes through (4, 9) and (6, 10).

Answers

Answer:

y = 4/5x + 14/5

Step-by-step explanation:

yee

Find the value of r so the line that passes through each pair of points has the given slope.
Point 1:(-7,2)
Point 2:(-8,r)
m = -5

Answers

Answer:

Step-by-step explanation:

[tex]\frac{r - 2}{-8+7} = -5[/tex]

r - 2 = - 5(- 1) ⇒ r = 7

Complete the statement. Explain your
reasoning
7
3
26
8 4 15 C

Answers

Answer:

132 degree

Step-by-step explanation:

a and b are parallel and c is a transversal

so 2 and 3 are interior and they both equal 180

so 3 = 180-48= 132

Answer:

m<3=138

Step-by-step explanation:

m<2=42

m<1=m<3

180-42=138

m<1=138 m<3=138

m<1 and m<3 are alternate interior angles

M is the midpoint of RS. R has coordinates (-2,-3) and M has coordinates (1,0). Find the coordinates of S.

Answers

Answer:

[tex](4,3)[/tex]

Step-by-step explanation:

Given

[tex]R = (-2,-3)[/tex]

[tex]M = (1,0)[/tex]

Required

Determine the coordinates of S

Midpoint is calculated as:

[tex]M(x,y) = \frac{1}{2}(x_1 +x_2,y_1+y_2)[/tex]

Where:

[tex](x,y) = (1,0)[/tex]

[tex](x_1,y_1) = (-2,-3)[/tex]

Substitute these values in the above formula:

[tex](1,0) = \frac{1}{2}(-2 + x_2,-3+y_2)[/tex]

Multiply through by 2

[tex]2 * (1,0) = 2 * \frac{1}{2}(-2 + x_2,-3+y_2)[/tex]

[tex](2,0) = (-2 + x_2,-3+y_2)[/tex]

By direct comparison:

[tex]2 = -2 + x_2[/tex] and [tex]0 = -3 + y_2[/tex]

Solving for x2

[tex]2 = -2 + x_2[/tex]

[tex]x_2 = 2 + 2[/tex]

[tex]x_2 = 4[/tex]

Solving for y2

[tex]0 = -3 + y_2[/tex]

[tex]y_2 = 0 + 3[/tex]

[tex]y_2 = 3[/tex]

Hence, the coordinates of S is: [tex](4,3)[/tex]

A baker made 30 pastries in 2 1/2 hours. how many pastries did the baker make in one hour?

Answers

Answer:

12 pastries

Step-by-step explanation:

30/2.5 = 12

check:

12(1 hour) +12(1 hour) +6(Half hour) = 30

how to solve the equation 8b - 12 = 5b

Answers

Answer:

b = 4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Equality Properties

Step-by-step explanation:

Step 1: Define equation

8b - 12 = 5b

Step 2: Solve for b

Subtract 5b on both sides: 3b - 12 = 0Add 12 on both sides: 3b = 12Divide 3 on both sides: b = 4

Step 3: Check

Plug in b to verify it's a solution.

Substitute: 8(4) - 12 = 5(4)Multiply: 32 - 12 = 20Subtract: 20 = 20

And we have our final answer!

Can someone show an example of Inverses of Functions
Because I do not understand that subject

Answers

Answer:

I believe you mean algebra and inverses when you change it to solve inequalities.

Step-by-step explanation:

Let's use -3 + 4 as an example. In order to change the function, you will switch the sign. (In this case, we change "+" into ")

At this same time, you must change the sign in front of the numbers. (Positive signs become negative and negative signs become positive.

So, -3 + 4 is the same thing as 3 - -4.

3 - 4 = -1

-3 + 4 = 1

Tip: When subtracting a negative number, the answer is likely to go up instead of down.

I hope this helps! I did my best :)

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