Landon scores 80% on his math test. if there are 40 problems how many did he get correct

Answer:

Late, but is it 78?

Step-by-step explanation:

Answer:

by doing it the same way you did with the first one.

Step-by-step explanation:

Answer:

6x2=12

Step-by-step explanation:

Answer:

thats 12

Step-by-step explanation:

and ik that for a fact because u need to multipy

Answer:

(2x +3  )(x-5)

one is the length and one is the width

Step-by-step explanation:

2x^2-7x-15

Factor

(2x      )(x      )

What are the factors of -15?  -1*15  and -3*5, 3*-5 , 1*-15

We need 2* one factor ± the other factor = -7

2*-5 +3 = -7

That means the -5 is on the outside and the +3 is on the inside

(2x +3  )(x-5)

Answer:

it would be about $18000 in value

Step-by-step explanation:

:)

Answer:

The problem basically is saying that find two numbers that add up to 8, where one is three times the other.

Step-by-step explanation:

The best thing to do here is to write a simple system of equations.

b+y=8

b=3y

The first equation means that the total blue paint plus the total yellow paint is equal to 8 ounces.

The second equation means that the blue paint is equal to 3 times the yellow paint.

We can isolate b in the first equation to get b=-y+8

-y+8=3y

8=4y

y=2.

So we have that she needs two ounces of yellow paint.

Therefore she needs six ounces of blue paint.

Drag the yellow bar to 2, and the blue bar to 6.

Hope this helps!

Answer:

D

Step-by-step explanation:

What you need to do is find the slope of both lines. Perpendicular lines are the negative inverse of each other. The slope of the lie between points R and F is  (2-4)/(1+9)=-1/5. Now you need to find the line where the slop is 5. If you look at D, the slope of the line those points lie on is (25-15)/(4-2)=5 which makes D the answer.

Answer:

D. (2,15) and (4,25)

Step-by-step explanation:

The slope of the line that passes through (-9,4) and (1,2) is -1/5 so in order to find the slope that is perpendicular to it, you need to find out with of these pairs of points has a slope that is the negative reciprocal of -1/5 which is 5. So the only points that have the slope of 5 are (2,15) and (4,25).

~Please mark me as brainliest :)

Answer:904.78

Step-by-step explanation:

Answer:

ASA

Step-by-step explanation: I'm not sure I had just found a key.

Answer:

its SAS

Step-by-step explanation:

Answer:

This is for cylyinder

V=πr2h

2723.76

Answer:

1

Step-by-step explanation:

Answer:

B and E

Step-by-step explanation:

The 2 in front of the x^3 stretches it vertically and the +8 shifts it up.

Answer:

hi

Step-by-step explanation:

Answer: D. n + q = 20

5n + 25q = 300

Step-by-step explanation:

Let n represent the number of nickels that you have.

Let q represent the number of quarters that you have.

Suppose you have 20 coins. It means that

n + q = 20

The total value of the coins is $3. The value of a quarter is $0.25 and the value if a nickel is $0.05. Therefore, the equation would be

0.05n + 0.25q = 3

Multiplying both sides of the equation by 100, it becomes

5n + 25q = 300

The correct option is

D. n + q = 20

5n + 25q = 300

Answer:

D

Step-by-step explanation:

Answer:

Don't Know

Step-by-step explanation:

I'm sorry to say this but I can't answer this full equation without knowing what the three statements are.

Answer:

22084920

Step-by-step explanation:

Answer:

3/10 cubic in.

Step-by-step explanation:

V= w*h*l= 3/5 times 3/4 times 2/3 = ...

3/10 cubic in. simplified

Hope this helps :D

The volume of a cuboid is 3/10 cubic inches.

Volume is the measure of the capacity that an object holds.

Formula to find the volume of the object is Volume = Area of a base × Height.

Given that, length of a cuboid = 2/3 in., Breadth of a cuboid=3/5 in., and height of a cuboid = 3/4 in.

We know that, the volume of a cuboid = Length×Breadth×Height

= 2/3 × 3/5 × 3/4

= 1/5 × 3/2

= 3/10 cubic inches

Therefore, the volume of a cuboid is 3/10 cubic inches.

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Answer:

60

Step-by-step explanation:

math

Answer:

60

Step-by-step explanation:

The function for the total profit is going to be [tex]f(x)=(20+x)(100-x)[/tex] because the profit is the number of paintings multiplied by the number of dollars per painting, and for each additional painting the cost goes down by one. Multiplying this out, you get the quadratic function [tex]f(x)=-x^{2}+80x+2000[/tex]. We are trying to find the maximum, or the vertex, and we do not care about the y-coordinate of the vertex, which is the dollar amount, we only care about the x coordinate. We can find the x coordinate by using [tex]-b/2a[/tex] , which gives -80/-2 or 40. Now, we must remember that we started with 20 paintings, so adding 20 to 40 we get 60, the final answer.

Answers:

1. 12.5

2. 36

3. 40.5 kg

4. 13 and 8

5. 9

Look at the attached picture

Hope it will help you...

Good luck on your assignment

Answer:

x = -1

Step-by-step explanation:

- 10 + x + 4 - 5 = 7x - 5

-11 + x = 7x - 5

-6 + x = 7x

-6 = 6x

x = -1

Answer:

x= -1

Step-by-step explanation:

Step 1: combine like terms

-10+x+4-5=7x-5---------->  -10-5+4+x=7x-5-------->-11+x=7x-5

Step 2: Isolate the variable

-11+x=7x-5-------------> -11+5-x+x=7x-x+5-5-------> -6=6x

Answer:

x= -1

Answer:

[tex]=8[/tex]

Step-by-step explanation:

[tex]\log _2\left(16\right)\log _3\left(9\right)\\\mathrm{Simplify}\:\log _2\left(16\right):\quad 4\\\log _2\left(16\right)\\\mathrm{Rewrite\:}16\mathrm{\:in\:power-base\:form:}\quad 16=2^4\\=\log _2\left(2^4\right)\\\mathrm{Apply\:log\:rule}:\quad \log _a\left(x^b\right)=b\cdot \log _a\left(x\right)\\\log _2\left(2^4\right)=4\log _2\left(2\right)\\=4\log _2\left(2\right)\\\mathrm{Apply\:log\:rule}:\quad \log _a\left(a\right)=1\\\log _2\left(2\right)=1\\=4\cdot \:1[/tex]

[tex]\mathrm{Multiply\:the\:numbers:}\:4\cdot \:1=4\\=4\\=4\log _3\left(9\right)\\\mathrm{Simplify}\:\log _3\left(9\right):\quad 2\\\log _3\left(9\right)\\\mathrm{Rewrite\:}9\mathrm{\:in\:power-base\:form:}\quad 9=3^2\\=\log _3\left(3^2\right)\\\mathrm{Apply\:log\:rule}:\quad \log _a\left(x^b\right)=b\cdot \log _a\left(x\right)\\\log _3\left(3^2\right)=2\log _3\left(3\right)\\=2\log _3\left(3\right)\\\mathrm{Apply\:log\:rule}:\quad \log _a\left(a\right)=1\\\log _3\left(3\right)=1\\=2\cdot \:1[/tex]

[tex]\mathrm{Multiply\:the\:numbers:}\:2\cdot \:1=2\\=2\\=4\cdot \:2\\\mathrm{Multiply\:the\:numbers:}\:4\cdot \:2=8\\=8[/tex]

Answer:

the answer is A

Step-by-step explanation:

an isosceles triangle is a triangle with two congruent sides and one not congruent to the others

Answer:

A

Step-by-step explanation:

the isosceles triangle has at least two equal sides and so does triangle W

Answer:

The answer is D 5.75 inches

Step-by-step explanation:

D. 5.75

Step-by-step explanation:

11.5*16*5.75 = 1,058

Answer:

He has 7 nickels, 14 dimes, and 21 quarters.

Step-by-step explanation:

Let d = number of dimes.

Let n = number of nickels.

Let q = number of quarters.

The value of a dime is $0.10, so d dimes are worth 0.1d

The value of a nickel is $0.05, so n nickles are worth 0.05n

The value of a quarter is $0.25, so q quarters are worth 0.25q

The value of all coins combined is the sum of the values above, and it equals $7.00

0.1d + 0.05n + 0.25q = 7

The number of dimes = 2 times the number of nickels, so

d = 2n

The number of quarters = 3 times the number of nickels, so

q = 3n

Now we substitute 2n for d and 3n for q in our equation above.

0.1d + 0.05n + 0.25q = 7

0.1(2n) + 0.05n + 0.25(3n) = 7

0.2n + 0.05n + 0.75n = 7

n = 7

He has 7 nickels.

d = 2n = 2(7) = 14

He has 14 dimes.

q = 3n = 3(7) = 21

He has 21 quarters.

Answer: He has 7 nickels, 14 dimes, and 21 quarters.

Answer: He has 7 nickels, 14 dimes, and 21 quarters.

Step-by-step explanation:Did this one before and got it right!

Answer:

j

Step-by-step explanation:

The average rate of change of g over the interval [-1, 2] is -2.67.

Average rate of change of a function is defined as the rate at which the value of the function is changing with respect to the change in the input values.

Given a function g.

Given interval is [-1, 2].

Average rate of change = [g(2) - g(-1)] / [2 - -1]

                                        = (-3 - 5) / (3)

                                        = -8/3

                                        = -2.67

Hence the average rate of change is -2.67.

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Answer:

(2x+1)(x−5)

Step-by-step explanation:

If we factor 2x² - 9x - 5 using substitution, we would have; (2x+1)(x−5).

The substitution method of factorization requires that we replace it with another variable. Thus, in the expression above, we would first determine the product of the leading coefficient, and find two numbers that add up to the coefficient of the leading term.

The last step is to group the terms and factor the greatest common factor. The result of this factorization would be:

(2x+1)(x−5)

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Answer:

To form the converse of the conditional statement, interchange the hypothesis and the conclusion. The converse of "If it rains, then they cancel school" is "If they cancel school, then it rains." To form the inverse of the conditional statement, take the negation of both the hypothesis and the conclusion.

Step-by-step explanation:

Answer:

1109

Step-by-step explanation:

So the pattern is + 16

So if you start from -27, the second term is -27 + 16 * 1

The 72nd term will be -27 + 16 * 71

16 * 71 = 1136

-27 + 1136 = 1109

Answer:

This answer for the provided question is yes.

If its what I think, The answer would be A. 1 1/5

48/40 = 1 8/40

1 8/40 Simplify to 1 1/5

Hope this helps!

Step-by-step explanation:

Answer:

6 m

Step-by-step explanation:

plz mark brainliest!

Answer:

9

Step-by-step explanation:

Answer:

Step-by-step explanation:

The distance between the pounts 11 and 15 is: 15-11=4 and the distance between 11 and 6 is: 11-6=5

I hope it'll help you much

Thank you for asking