Mathematics High School

expand to write an equivalent espression: 5(8a+2)​

Answers

Answer 1

Answer:

Step-by-step explanation:

Search hit up

Answer 2

Answer:

5·8·a+5·2=

40a+10

Step-by-step explanation:

Related Questions

Are the graphs of y = -2x + 4 and y = (1/4)x -2 parallel, perpendicular, or neither? *

Answers

Answer: Neither

Step-by-step explanation:

For this to be paralell it would need to have the same slope. (They don't  have the same.) For this to perpandicular it would have to reciporcal  ( Ex: -2 reciporcal would -1/2 or 1/4 reciprocal would have to be 4)

Answer:

neither

Step-by-step explanation:

For two lines to be parallel, their slopes must be equal.

For two lines to be perpendicular, their slopes must have a product of -1. (The only exception is a vertical line and a horizontal line which are perpendicular, but the product of their slopes is not -1.)

When the equation of a line is written in the slope-intercept form,

y = mx + b,

m is the slope.

y = -2x + 4 has a slope of -2.

y = (1/4)x -2 has a slope of 1/4.

Clearly, -2 and 1/4 are not equal, so the lines are not parallel.

Now we find the product of the slopes.

(-2) * (1/4) = -2/4 = -1/2

The product of the slopes does not equal -1, so the lines are not perpendicular.

Answer: neither

find the area of the circle 26 in. rounded to the nearest tenth

Answers

Answer:

πr²

22/7*13²

22/7*169

3718/7

531.145

to the nearest tenth

531.15inches

Kiran is playing a video game. He earns 3 stars for each easy level he completes and 5 stars for each difficult level he completes. He completes more than 20 levels total and earns 80 or more stars

Answers

Answer:

10 easy levels and 10 difficult levels

Step-by-step explanation:

Given data

let the number of easy levels be x

and the number of difficult levels be y

so

x+y= 20----------1

and

3x+5y= 80------2

from 1

x=20-y

put this in 2

3(20-y)+5y= 80

60-3y+5y=80

2y=80-60

2y=20

y= 20/2

y= 10

put y= 10 in 1

x+10=20

x=20-10

x= 10

Hence Kiran played 10 easy levels and 10 difficult levels

Janice NEEDS 3 GALLONS of lemonade for a party. She has 4 quarts, 6 pints and 4 cups of lemonade already made. How many CUPS of lemonade does Janice have? Be sure to re-state the question when giving your answer.

Answers

Answer:

32 cups

Step-by-step explanation:

To find the total number of cups, we have to convert the measures that are not in cups to cups and add

1 quart  = 4 cups

4 quarts = 4 x4 = 16 cups

1 pint = 2 cups

6 pints = 2 x 6 = 12 pints

total number of cups = 16 + 12 + 4 = 32 cups

Which expression has a value of 15 when n=7

Answers

the answer is the last one, 19-28/n

Answer:

The last one

Step-by-step explanation: because the first is 8

And the second one is 16

And the third one is 14

The fourth one is 15

I got this answer because I plugged 7 in each of the equations for n

Can someone help me on this algebra question

Answers

Answer:

It is the last one

Step-by-step explanation:

HELP ME PLEASE ASAP!

Rewrite using a single positive exponent

(6^-3)^-9

Answers

1/(6^-3)^9 hope this helps :)

5 2/3 divided by 3/2

Answers

Answer:

3 7/9

Step-by-step explanation:

A circle has a radius of 4ft. What is the area of the sector formed by a central angle
measuring 3TT/2 radius?
Use 3.14 for pi.
o 37.68 ft?
o 18.84 ft2
o 50.24 ft
O 75.36 ft2

Answers

Answer:

The correct answer is: 37.68ft^2

Step-by-step explanation:

Which equation shows the commutative property of addition?
A) 4 + -4 = 4+ -4
B) x(4 + 4) = 4 (x +4)
C) 4 + 2 + 3 = 3 + 2 +4
D) 4 +2 = 6

Answers

Answer:

C

Step-by-step explanation:

Whoever answers correctly gets brainliest

Answers

Answer:

25 miles

Step-by-step explanation:

175/7 = 25 miles

The jet will fly 25 miles in one minute.

The jet will fly 25 miles

HELP PLEASE!!!! math questions:
1. Fill in the blanks to describe how you could identify the number of solutions to a system if you only
knew some points on each line.
Start by finding the _______________ of each line using the points.
Compare the slopes. If they are different, the lines _______________. This means there is
_______________ solution to the system.
You could also plot the points on a _______________ and use this to find the point where the
lines_______________.

2. . Identify the number of solutions from the description of the equations.
Two equations are the same on one side but different on the other. ANSWER:
One of the equations in the system can be rewritten so it is identical to the other equation.ANSWER:

3.Adding the equations in a system of equations can sometimes be helpful in solving a system of
equations. Explain why.

Answers

Answer:

1)Rate of change, intersect, one, graph, intersect  (i'm not really sure but this is what i think the answers are for 1)

Step-by-step explanation:

The answer is in you brain sorry ;$

x2 - 4x - 3=0, solve the quadratic equation

Answers

Answer:

-3/2

Step-by-step explanation:

Answer:

x=3,1

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

Can someone help me pleaseee

Answers

The correct answer is D. Because, x-8>-3 is x>5 and x>5 on a graph is choice D

AWARDING BRAINLIEST
PLS HELP ME (please don’t just put something random.)

Answers

Answer:

the answer is 312 cm

I took the quiz

In right triangle ABC with the right angle at C, m the nearest tenth.

Answers

Answer:

I like math

Step-by-step explanation:

The diagram shows a 140° sector in a circle of radius 8 units.

What is the approximate area of the shaded sector?
A) 25 square units
B) 67 square units
C) 78 square units
D) 156 square units

Answers

Answer: 78 square units

Step-by-step explanation:

Give the product in simplest form:

Answers

Answer:

hi

Step-by-step explanation:

4 7/8 .4 3/4= 7/2 . 3 =21/2

Answer:

23 5/32

Step-by-step explanation:

Convert both 4 7/8 and 4 3/4 into improper fractions:

the first becomes 39/8, and the second becomes 19/4.  We then have:

39      19              

------ * -----   which comes out to 23.15625, or 23 5/32

  8       4                                      

find the value of X, please!

Answers

Answer:

x=42°

Step-by-step explanation:

We know that 2 of the legs are congruent, so the angles opposite them will be congruent.

The angles of a triangle add up to 180°

This can be represented by [tex]96+2x=180[/tex]

[tex]2x=84[/tex]

[tex]x=42[/tex]

Hope this helps :-)

Answer: 42 degrees

Step-by-step explanation: Since this is an isosceles triangle, your remaining two angles will be equal

There are 180 degrees in any triangle

Since you have already used 96 degrees, you must subtract to find what is remaining

180-96=84

Since your remaining two angles are equal, you can half 84 to find your answer

84/2=42

Both x and your one remaining angle should be 42

X=42

Please please help me I don’t know this at all I will give Brainlyest

Answers

Answer:

the answer is the 2nd option

Step-by-step explanation:

n=5/6

Answer:

n = 5/6

Step-by-step explanation:

Hey There!

our goal is to get the variable on one side (n) and the constant on the other

To do this we divide each side by 4/5

2/3 divided by 4/5 = 5/6

Therefore n = 5/6

Hope this helps :) and if you have any more questions just let me know

Pls help it’s 6th grade math

Answers

Answer:

.

Step-by-step explanation:     The first answer is c. 7+3w, because the puppy already weighs 7 ounces. Since the puppy didn't end up losing those pounds, then you would add instead of subtract. Since the puppy gains 3 ounces a week, you would multiply the 3 ounces by the number of weeks that pass by. So, if one week passes, the puppy gains three ounces. Add that to the original 7 ounces, then after one week, the puppy weighs 10 ounces.

The second answer would be a. 22 ounces, because if you use the previous formula (x=7+3w), then you would plug 5 in for w. This would give you 7+3(5). 3x5=15 and 15+7=22. therefore, x=22 ounces.

Answer:

7)c, 8)a

Step-by-step explanation:

since it is originally 7 oz, and grows 3 ounces a week, it would be 7+3w.

Substitutions would be 7+3(5) = 7+15 = 22 oz

determine if the following ordered pair is a solution to the system of linear equations.

Answers

I really don’t know

Sandy has 4 horses, 2 cats, and 6 chickens. What percentage of Sandy's pets have two legs.

Answers

Answer:

50%

Step-by-step explanation:

only chickens have two legs, both horses and cats have 4 legs. So when you add all of the pets together you get 12. There are 6 chickens and 6/12 is 50%

8/12 or about 66.6% of Sandy’s animals have two legs

PLEASE HELP ASAP, DUE IN AN HR!!!

A cube has edges of 1/4 inch. What is the surface area of the cube? Use the formula Surface Area = 6s^2.

Answers

Answer:

[tex]\dfrac38 \text{ sq in}[/tex]

Step-by-step explanation:

plug 1/4 into the formula for surface area and simplify to get 6/16, or 3/8.

You are selling tomatoes. You have already earned $16 today. How many additional pounds of tomatoes do you need to sell to earn a total of $60

Answers

Six in total darling.

I NEED HELP REALLY FAST

Answers

Answer:

4) She can make 20 foot pieces 5) 14 vases

Step-by-step explanation:

4) First, 5 x 4 = 20, so Mrs. Wing is able to make 20 pieces.

5) She will need 14 vases, because 7 x 2 = 14

Another way to solve problem 5, is that you could do 7/1 divided by 1/2 to get your answer.

Hope this helps!

What is the correct formula of the 3D shape below?

V= 4/3 π r³
V= 1/3 π r² h
V= π r² h

Answers

Answer:

V= π r² h

Step-by-step explanation:

Write in simplest form: 25ab/(15b2) = _____

Answers

Answer:

5a/3b

Step-by-step explanation:

(5a)/(3b)

as long as b ≠ 0

evaluate the expression when x=8, y=3, and z=11 5x - 9y =2z

Answers

Answer:

5x-9y=2z

Step-by-step explanation:

5x8=40

9x3=27

2x11=22

so 40-27=22

Zoey is collecting Pokémon cards. She already has 50 cards and she buys 10 every week. How many weeks will it take her to collect 500?

Answers

10 weeks is the correct answer

Answer:

10 weeks

Step-by-step explanation:

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As a result, the UN's worst case scenario for 2100 is that the world population will reach almost 16 billion (UN, 2011). That is more than twice the number of people we have today. And yet already we are placing undue pressure on the Earth. The kind of pressure that, if increased, could have a profound and irreparable effect on our planet.The first fundamental issue is water. Just 2.5% of the world's water is fresh, with much of that caught up in polar ice caps (University of Michigan, 2000). Drought and poor infrastructure mean that already today water is a scarce resource. Over seven hundred million people lack access to clean water (WHO, 2013) and one in three people in every continent do not have enough water to satisfy their daily needs (WHO, 2009). Without clean drinking water, there will be an exponential increase in the incidence of diseases such as cholera and typhoid, which will undoubtedly place an excessive strain on healthcare systems. Without water for agriculture and industry, our food and manufacturing industries will be unable to satisfy demand. Already today, 10% of people consume foods which have been irrigated using waste water full of chemicals or disease (WHO, 2009). Should water become even scarcer, this is likely to grow further.The second critical issue is land. Current agricultural practices and the impact of pollution both contribute to soil erosion and a decreased level of soil fertility. It is estimated such poor quality land affects 1.5 billion people around the world (UNCCD, 2011). Deforestation and mining have had a devastating impact on our ecosystem and the biodiversity on which it thrives. The WWF (n.d.) estimates that we may be losing 10,000 species a year. All of this affects the number of crops that can be grown and produces greater food insecurity. How can we allow such environmental degradation to occur under our noses? 5 Another prime concern is energy. 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