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Answer:

m=-9

Step-by-step explanation:

Answer:

40 units^2

Step-by-step explanation:

The area of the triangle is

A = 1/2 bh

A = 1/2 ( 8 * 10)

   = 1/2 (80)

  = 40 units^2

Step-by-step explanation:

a=1/2*b*h

a=1/2*8*10

a=40

Step-by-step explanation:

3x - 8 + 2x + 9 = 451

5x = 450

x = 90

last weekend: 262

this weekend: 189

Topic: algebraic equations

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Answer:

60,000,000,000

Step-by-step explanation:

Answer:

71 degrees

Step-by-step explanation:

All angles in a triangle must add up to 180 degrees. If we take that total 180 and subtract 38, we get 142 degrees. If we divide that by two, because the angles are the same, we get 71 degrees. Therefore x=71

Answer:

She should use 32.5 g of the sample that contains 14%

Step-by-step explanation:

Here, we want to know the number of grams of the sample that contains 14% copper that should be used

let the number of grams that contains 14% copper to be used be x

Then the number of grams of 22% will be 130-x

Thus, mathematically;

0.14(x) + 0.22(130-x) = 0.2(130)

0.14x + 28.6 - 0.22x = 26

0.22x - 0.14x = 28.6 - 26

0.08x = 2.6

x = 26/0.08

x = 32.5

Answer:

u tried -8t^6???

Step-by-step explanation:

because -*+= -

Answer: -8t^6

Step-by-step explanation:

You just have to multiply the 2 and -4 which would give you -8. Then add the two exponents and you would get a 6.

Answer:

i think i think its B

Step-by-step explanation:

Answer:

The three numbers are 19, 18, and 31.

Step-by-step explanation:

The three numbers are x, y, and z.

y=x-1

z=2y-5

z=x+12

2y-5=x+12

2(x-1)-5=x+12

2x-2-5=x+12

x=19

y=18

z=31

The three numbers are 19, 18 and 31

Algebra is the branch of mathematics that helps in the representation of problems or situations in the form of mathematical expressions.

let the three numbers be x, y, and z.

So, according to question

The second of three numbers is one less than the first,

y = x-1

The third number is 5 less than twice the second,

z=2y-5

also, If the third number exceeds the first number by

12z=x+12

Now, equating the equations

2y-5=x+12

2(x-1)-5=x+12

2x-2-5=x+12

x=19

So, y=18 and z=31.

Learn more about algebra here:

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Answer:

x+6=9

Step-by-step explanation:

divide all by 5

Answer:

x=3

Step-by-step explanation:

Subtract 30 from both sides.

5x=15

Divide both sides by 5

x=3

Edit: Go with the other answer

Store A's prices are represented by the expression 15x - 2.

Store B's prices are represented by the expression 3(5x + 7).

To find when the 2 stores charge the same rate , we set the expression equal and solve for x

15x - 2 = 3(5x+7)

15x -2 = 15x + 21

Subtract 15x on both sides

-2 = 21

We cannot solve for x

So , the price of two stores never be same

Two stores never charge the same rate

|f(a)| , the vertical lines mean absolute value. Absolute value is the positive value of the answer whether it is actually negative or positive.

F(a) is given as -5, so the absolute answer would be 5

The answer is 5

Answer: x=4 and y=-3

Step-by-step explanation:

To use elimination to solve system of equations, you want to make sure the equations are first in standard form.

2x+4y=-4

3x+5y=-3

We want to make sure either the x or the y are equal so we can eliminate them. Let's eliminate x.

2x+4y=-4            [multiply equation by 3]

3x+5y=-3            [multiply equation by 2]

6x+12y=-12

6x+10y=-6

We can now subtract the equations.

2y=-6                  [divide both sides by 2]

y=-3

Now that we know y=-3, we can plug it into an equation to solve for x.

2x+4y=-4            [plug in y=-3]

2x+4(-3)=-4        [multiply]

2x-12=-4             [add both sides by 12]

2x=8                   [divide both sides by 2]

x=4

The final answer is x=4 and y=-3.

Answer:

x=5

Step-by-step explanation:

I just rounded up my answer but if this is not correct then it is a decimal of 4.7

Answer:

1.three sides polygon have

2. i think 11- gons has regular properties so the equation for this would be 1620 divided by 11 and it equals 147.27 so the meauser of the interirinangle of a 11-gon is about 147.27 degrees.

3.8 sides

Step-by-step explanation: if the sum of the angles is 10,800 degrees and each angle is 1,350 degrees, the deck will have the number of sides of the sum of the angle measurements divided by each angls measurmeasur.ments

10,800/1,350=1,080/135= 8 sides

Pease mark me brainlist.

Answer:

In the picture above it shows how to answer the questions step by step. If there's a mistake, pls inform me.

Answer:

A

Step-by-step explanation:

7=8.96

5=??

(5×8.96)÷7= 6.4

which is shown by A

[tex]y=|x+1|+2[/tex]

also that's a huge blank.

Answer:

The original fee is $40 before you add any miles.

Step-by-step explanation:

When the miles are at 0 the fee is already at $40.

Answer:

I believe it is D

Step-by-step explanation:

I'm bad at y intercepts so I'm SO sorry if I am incorrect

i would love to help but i just need free points

Step-by-step explanation:

Answer:

[tex]\displaystyle r=\sqrt[3]{\frac{3V}{4\pi}}[/tex]

The last option matches the correct solution

Step-by-step explanation:

Equation Solving

We have the following equation:

[tex]\displaystyle V=\frac{4}{3}\pi r^3[/tex]

And it's required to solve it for r.

Solving this equation needs to perform some operations to have the r isolated from any other variables or constants.

It can be done by conveniently operating on both sides as follows:

Eliminate the denominator by multiplying by 3:

[tex]\displaystyle 3V=4\pi r^3[/tex]

Move [tex]4\pi[/tex] to the other side by dividing by [tex]4\pi[/tex]:

[tex]\displaystyle \frac{3V}{4\pi}= r^3[/tex]

Swapping sides to have r at the left side:

[tex]\displaystyle r^3=\frac{3V}{4\pi}[/tex]

Finally, take the cubic root and leave r alone:

[tex]\displaystyle r=\sqrt[3]{\frac{3V}{4\pi}}[/tex]

The last option matches the correct solution

Answer:

110

Step-by-step explanation:

The answer is 110 degrees. The reason is hard to put into simple language.

If the central angle and the acute angle hitting the circumference share the same end points, then the central angle is double the arc whose vertex is on the circumference.

Read that sentence a couple of times. I don't know how to make it simpler.

The arc angle and the central angle both have B and C as their end points.

The arc angle is on the circumference of the circle. The vertex (A) of BAC is on the circumference. If mine is the only answer, wait a few days before awarding a Brainliest. A thanks will do.

Answer:

40

Step-by-step explanation:

5*4*2 because she does 4 baskets in 1/2 hour not 1

Answer:

Step-by-step explanation:

Which of the following shows 4.819 correctly rounded to the tenths place

put the smaller number in the end 1.489 i hope this helps

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Reminder :

[tex](x + a)(x + b) = {x}^{2} + (a + b)x + (a \times b) \\ [/tex]

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[tex] {v}^{2} + ( - 7s {u}^{2} + s {u}^{2})v +( ( - 7s {u}^{2})(s {u}^{2} )) = \\ [/tex]

[tex] {v}^{2} - 6s {u}^{2} v - 7 {s}^{2} {u}^{4} \\ [/tex]

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Answer:

v² - 6su²v - 7s²[tex]u^{4}[/tex]

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, that is

= v(v + su²) - 7su²(v + su²) ← distribute both parenthesis

= v² + su²v - 7su²v - 7s²[tex]u^{4}[/tex] ← collect like terms

= v² - 6su²v - 7s²[tex]u^{4}[/tex]

Answer:

B -- give brainliest pls

Step-by-step explanation:

Answer:

x=5 y=-2.

Step-by-step explanation: