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x + 21 + 3x + 9 = 90

Combine like terms

4x + 30 = 90

Subtract 30 from both sides

4x = 60

Divide both sides by 4

x = 15

Answer:

x = 15

Step-by-step explanation:

You can use the opposite angles property to solve this problem. By using the property, the opposite angle of x+21 must also be x+21. So therefore, you can setup the equation x+21+3x+9=90. Simplify and you should get 4x+30=90. Subtract 30 on both sides and you get 4x=60. Divide 4 on both sides and you get x=15.

Answer:

Hi there!

Your answers are:

1) 38^10

2) 20^3

Step-by-step explanation:

1) Theres a property that goes like this:

(x^m)^n = x^mn

When you do a power of a power, you multiply them together!

2) There's a property that looks like this:

x^ m / x^n = x^ m-n

When dividing exponents, subtract!

Hope this helps!

Answer:

The answer is 224

Step-by-step explanation:

You would have to multiply 45 by 7 which is 315

Then subtract 315 from 987 which equals 672 then divide 672 and 3 which is 224.

Answer:

=224

Please I need a Brainliest

Answer:

9

Step-by-step explanation:

First, you solve the initial equation 3m+5=23.

3m+5-5=23-5

3m=18

3m/3=18/3

m=6

Second, you input the answer 6 into m in the second equation.

2(6)-3

12-3

=9

Answer:

2x^5-2x^4+3x+3

Step-by-step explanation:

distribute -1 to the second part of the expression and then combine like terms

Step-by-step explanation:

[tex]3 - {6x}^{5} - {8x}^{4} + {6x}^{4} + 3x + {8x}^{5} = {2x}^{5} - {2x}^{4} + 3x + 3 [/tex]

Step-by-step explanation:

20x12= 240cm^2 (the size of one brick)

If there are 5000 bricks then you multiply 240cm^2 by 5000

5000x240= 1,200,000cm^2

(it's a huge number so I'm not so sure about this)

10x + 6p

Hi there !

4x + 3p + 3p + 6x =

= (4x + 6x) + (3p + 3p)

= x(4 + 6) + p(3 + 3)

= x·10 + p·6

= 10x + 6p

Good luck !

Answer:

Step-by-step explanation:

(x+7)/2= -8

x + 7 = -16

x= -23

(y + 1)/2 = -9

y + 1 = -18

y = -19

(-23, -19)

Answer: 8

Step-by-step explanation:

Answer:

28°

Step-by-step explanation:

--------------

m∠TUV = m∠TUQ + m∠QUV

m∠TUQ = 5*7° - 7° = 28°

Answer:

D. Hopelly its correct

Answer:

it's 6

Step-by-step explanation: Got it right on edg:D

Multiply the numerator by numberator and denominator by denominator.

a/b multiplied by c/d is ac / bd.

Answer:

Multiply the top numbers

Multiply the bottom numbers

Simplify if needed

Example:

4/5×6/8= 24/40=3/5

Answer:

13p = 7 - 13

13p = -6

p = -6/13

Hopr it helps

Answer:

65 MPH

Step-by-step explanation:

Speed = Distance/Time

x = 1170/18

x = 65 MPH

Answer:

x=8

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    -1/2*x+3-(-x+7)=0

simplify 1/2

((0 -  (1/2• x)) +  3) -  (7 - x)  = 0

Adding a whole to a fraction

Rewrite the whole as a fraction using  2  as the denominator :

        3     3 • 2

   3 =  —  =  —————

        1       2  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

-x + 3 • 2     6 - x

——————————  =  —————

    2            2  

(6 - x)    

 ——————— -  (7 - x)  = 0

    2      

ubtracting a whole from a fraction

Rewrite the whole as a fraction using  2  as the denominator :

            7 - x     (7 - x) • 2

   7 - x =  —————  =  ———————————

              1            2    

Adding up the two equivalent fractions

(6-x) - ((7-x) • 2)     x - 8

———————————————————  =  —————

         2                2  

x - 8

 —————  = 0

   2  

When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 x-8

 ——— • 2 = 0 • 2

  2

Now, on the left hand side, the  2  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  x-8  = 0

Solve  :    x-8 = 0

Add  8  to both sides of the equation :

                     x = 8

Hope this helps :)

Answer:

x=8

Step-by-step explanation:

Original equation: -1/2x+3 = -x+7

First, you must isolate the x value to be alone on 1 side. Steps 1 and 2 do this.

1. Subtract 1/2x to both sides.

This results in:

-0.5x + 7 = 3

Because -x - (-1/2x) = -x + 1/2x = -0.5x

2. Subtract 7 from both sides.

This results in:

-0.5x = -4

Because 3 - 7 = 4

Then, you simply get rid of the -0.5 by multiplication. Steps 3 and 4 accomplish this.

3. Multiply the whole equation by -1

-1(-0.5x) = -1(-4) —> 0.5x = 4

We did this to make it easier to see the equation.

4. Divide the whole equation by 2

2(0.5x) = 2(4) —> x = 8

Your answer is x = 8 because 0.5 times 2 is 1 and 2 times 4 is 7, and you can now ignore the 1 because anything times 1 is itself.

So x=8.

Greetings from Brasil...

Note the graph of the function eˣ (or e⁻ˣ). We conclude that for any value of X, the result will be between 0 and +∞.\

So there is no value for X that the result of m.eˣ (or m.e⁻ˣ) is negative.

So you can answer:

For the equation of the statement of the question, with any value of X, we will always obtain a number greater than zero

(OBS: we'll never get zero. We can get very close, but never zero)

Answer:

8x-3

Step-by-step explanation:

The total perimeter is the length of all the sides of the triangle added together, in this case that is 11x+1. In order to get the length of the one side by itself subtract the other two side lengths from the perimeter. (11x+1)-(x+5)=10x-4. (10x-4)-(2x-1)=8x-3.

Answer:

16 weeks

Step-by-step explanation:

$80 + $8 a week [tex]\geq[/tex] $205.75

80 + 8x  [tex]\geq[/tex]  205.75

8x [tex]\geq[/tex] 125.75

x [tex]\geq[/tex] 15.71875

16 weeks

Answer:

Going up by odd numbers I’m pretty sure

Step-by-step explanation:

1-2 that went up once

2-5 that went up 3 times

5-10 that went up 5

and so on

30 mins / day = 1 hr / 2 days

24 hrs * 2 days = 48 days

It would take Paloma 48 days to complete the 24 volunteer hours

Step-by-step explanation:

(7/8) / (6/9)

= (7/8) / (2/3)

= (7/8) * (3/2)

= (7 * 3) / (8 * 2)

= 21/16.

The result is: 7/8 divided by 6/9 is equal to 21/16.

To divide one fraction by another, we can multiply the first fraction by the reciprocal (inverse) of the second fraction.

The reciprocal of a fraction is obtained by flipping it upside down.

we have to find 7/8 divided by 6/9:

now we find the reciprocal of 6/9.

Reciprocal of 6/9 = 9/6 (Flip the fraction upside down)

Multiply 7/8 by the reciprocal of 6/9.

(7/8) × (9/6)

To simplify the fraction, first, check if both the numerator and denominator share any common factors and then divide both by their greatest common divisor (GCD).

Now, let's calculate:

(7/8) × (9/6)

Multiply the numerators: 7 × 9 = 63

Multiply the denominators: 8 × 6 = 48

The result is 63/48.

Find the greatest common divisor (GCD) of the numerator and denominator, which is 3 in this case (GCD of 63 and 48).

Divide both the numerator and denominator by the GCD (3):

63 ÷ 3 = 21

48 ÷ 3 = 16

The simplified fraction is 21/16.

So, 7/8 divided by 6/9 is equal to 21/16.

To learn more on division click:

brainly.com/question/21416852

#SPJ6

Answer:

6

Step-by-step explanation:

I mean seems to me that your counting

Answer:

151

Step-by-step explanation:

Answer:

no i do think so that dose not make sensens

Answer:

The angle of that is 90°

Answer: [tex]\overline{VW}=15[/tex] units.

Step-by-step explanation:

Since Point W is on line segment [tex]\overline{VX}[/tex].

That means V,W,X  are collinear such that [tex]\overline{VX} = \overline{WX}+\overline{VW}[/tex]  (i)

Given[tex]\overline{ WX}=2[/tex] units. ,  [tex]\overline{ VX} = 17[/tex] units.

To determine :  length of [tex]\overline{ VW}[/tex].

Substitute all the given values in (i), we get

[tex]17=2+\overline{VW}\\\\\Rightarrow\ \overline{VW} =17-2=15\\\\\Rightarrow\overline{VW}=15[/tex]

Hence, the length of [tex]\overline{VW}=15[/tex] units.

Answer:

points C and B

Step-by-step explanation:

becuse they lie at the same points on the number line, only one it oto the rights of zero and the other is to the left; making them oppsites.

Answer:The answar is B and C

Step-by-step explanation: I know this because i did this kind of questions before and it says wich two are oppsites, none of the other points are the exact oppsites of eachother.