Help with math here are photos

Anna [14]

Answer:

12x + 2

Step-by-step explanation:

To find what the expression equals, you can collect like terms. This means to do the operations (add or subtract) the numbers that have the same variables.

(8x + 5) + (4x - 3) Remove brackets to add a binomial (2-term brackets)

= 8x + 5 + 4x - 3 Collect like terms

= 8x + 4x + 5 - 3 I rearranged so you can see which terms are alike

= 12x + 5 - 3 Collected like terms with "x" (8x + 4x = 12x)

= 12x + 2 Collected like terms with no variables (5 - 3 = 2)

Therefore (8x + 5) + (4x - 3) is equal to 12x + 2.

If you want, you can also find another equal expression by factoring. Since "12x" and "2" are both divisible by the factor 2, you can take it out and put the other numbers in a bracket.

12x + 2

= 2(12x/2 + 2/2)

= 2(6x + 1) This is equal, but in factored form.

6 0

3 years ago

Read 2 more answers

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ExtremeBDS [4]

Answer:

C = 31

Step-by-step explanation:

Solve for c by simplifying both sides of the equation, then isolating the variable.

3 0

3 years ago

Read 2 more answers

The length of a rectangular wire frame with dimensions of 12 cm × 8 cm increases at the rate of 0.5 cm per second, while its wid

arsen [322]

Answer:

2/3

Step-by-step explanation:

Since the length increases by 0.5 cm every second, after 8 seconds the length will increase by 4 cm. 12 + 8 + 12 + 8 = 40, and 40 - (16 + 16) = 8. 8/2 = 4, so the width is now 4. 16 * 4 = 64, and 12 * 8 = 96. 64/96 = 2/3.

7 0

3 years ago

(V+5)(-1/9)=6 how do u solve this

Brrunno [24]

Answer:

v= -59

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : (v+5)*(-1/9)-(6)=0

Rearrange:

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

(v+5)*(-1/9)-(6)=0

Step by step solution :

STEP

1

:

1

Simplify —

9

Equation at the end of step

1

:

1

((v + 5) • (0 - —)) - 6 = 0

9

STEP

2

:

Equation at the end of step 2

(-v - 5)

———————— - 6 = 0

9

STEP

3

:

Rewriting the whole as an Equivalent Fraction

3.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 9 as the denominator :

6 6 • 9

6 = — = —————

1 9

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

STEP

4

:

Pulling out like terms

4.1 Pull out like factors :

-v - 5 = -1 • (v + 5)

Adding fractions that have a common denominator :

4.2 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:

(-v-5) - (6 • 9) -v - 59

———————————————— = ———————

9 9

STEP

5

:

Pulling out like terms :

5.1 Pull out like factors :

-v - 59 = -1 • (v + 59)

Equation at the end of step

5

:

-v - 59

——————— = 0

9

STEP

6

:

When a fraction equals zero :

6.1 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:

-v-59

————— • 9 = 0 • 9

9

Now, on the left hand side, the 9 cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

-v-59 = 0

Solving a Single Variable Equation:

6.2 Solve : -v-59 = 0

Add 59 to both sides of the equation :

-v = 59

Multiply both sides of the equation by (-1) : v = -59

5 0

3 years ago

Round the fraction 7 4/5 to the nearest whole number

AnnyKZ [126]

The nearest whole number is 8

When we are looking at rounding, we round to the number that our fraction or decimal is located. So, since we are rounding to the nearest whole number, given our original mixed number ( $7 \frac{4}{5}$ ) our answer will be either 7 or 8.

We can change $7 \frac{4}{5}$ to a decimal to equal 7.8 by multiplying both our denominator and our numerator by 2 since 5 * 2 =10, which would change our fraction to $\frac{8}{10}$ which is the same thing as .8

If we look at 7.8 and want to know if it is closer to 8 or 7, we just remember that when rounding, if it is 5 or above, you round up, anything else, you leave the number in front of it like it is. .8 is above 5 so we round 7 to the whole number 8. So, our answer is 8

Thank you for your question! I hope this helped! Have an amazing day and feel free to let me know if I can help you further! :D

5 0

4 years ago