All categories

3 years ago

-a + 7 + 5(-4 + 7a) what is this simplified

Mathematics

2 answers:

gayaneshka [121]3 years ago

7 0

The answer to that would b -a+7-20+35a i believe.

NISA [10]3 years ago

7 0

It would be -13 + 34a

First distribute 5 to the values in the parenthesis:

-a + 7 + 5(-4 + 7a)

-a + 7 -20 + 35a

Then add like terms:

-a - 13 + 35a =

-13 + 34a

You might be interested in

Which line is a graph of the equation x = 6? Identify the intercept.

Step2247 [10]

Correct answer is D.

Line x = a is parallel with y-axis and passes through the point (a,0).

So our line is parallel with y-axis and passes through the point (6,0).

3 0

3 years ago

Read 2 more answers

A circle with a radius of 1cm sits inside a 3 cm * 3 cm rectangle.

djverab [1.8K]

Answer:

which area is shaded the circle or the extra space

Step-by-step explanation:

5 0

3 years ago

Sarah Liskow was the top scorer in a women's professional basketball league for the 2006 regular season, with a total of 810 p

weeeeeb [17]

Answer:

150 one point throws, 165 two points throws and 110 three points throws

Step-by-step explanation:

Let x be the number of free (one point) throws.

The number of free throws Sarah made was 15 less than the number of two-point field goals she made. If y is the number of two points throws, then

$x=y-15$

so the number of two points throws $=x+15$

The number of two-point field goals that Sarah made was 55 less than double the number of three-point field goals she made. If z is the number of three points throws, then

$y=2z-55\\ \\2z=y+55\\ \\2z=x+15+55\\ \\2z=x+70\\ \\z=\dfrac{1}{2}x+35$

so the number of three points throws $=\dfrac{1}{2}x+35$

The total score is 810 points, so

$x\cdot 1+(x+15)\cdot 2+\left(\dfrac{1}{2}x+35\right)\cdot 3=810\\ \\x+2x+30+1.5x+105=810\\ \\4.5x=810-30-105\\ \\4.5x=675\\ \\x=150\\ \\x+15=150+15=165\\ \\\dfrac{1}{2}x+35=\dfrac{1}{2}\cdot 150+35=75+35=110$

4 0

4 years ago

2/3y + v = s solve for y

DanielleElmas [232]

Answer:

y = $\frac{3s-3v}{2}$

Step-by-step explanation:

Given

$\frac{2}{3}$ y + v = s ( subtract v from both sides )

$\frac{2}{3}$ y = s - v

Multiply through by 3 to clear the fraction

2y = 3s - 3v ( divide both sides by 2 )

y = $\frac{3s-3v}{2}$

3 0

4 years ago

The following information was reported in an article in a newspaper. A sheriff reported that investigators found 7.5 kilograms o

ruslelena [56]

Answer:

$93.33 per dose

Step-by-step explanation:

$1.4×10⁶/(7.5 kg) × (1 kg)/(1000 g) × (0.5 g)/(1 dose)

= (1.4×10⁶×0.5)/(7.5×10³) $/dose = 700/7.5 $/dose ≈ $93.33/dose

Converting dollars per kilogram to dollars per dose involves units conversion from kilograms to doses. We have done it in two steps, first to grams, then to doses.

5 0

3 years ago