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3 years ago

Please help, I’ll give Brainliest -8c + w + 6c - 5w

Mathematics

2 answers:

Alex73 [517]3 years ago

6 0

Answer:

-2c-4w

Step-by-step explanation:

combine -8c and 6c and you'll get -2, you also need to combine w and the -5w which you get -4w

ohaa [14]3 years ago

5 0

Answer:

-2c - 4w

Step-by-step explanation:

Combine like terms (-8c and 6c are alike and w and -5w are alike)

-8 + 6 = -2

1 + -5 is -4

Put the variables back together and put it into an expression.

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Solve the following equation: <br>(n + 1) + 3(n - 1) = 2(n - 1)(n + 1)

Mnenie [13.5K]

Answer:

n = 0, n =2

Step-by-step explanation:

Given

(n + 1) + 3(n - 1) = 2(n - 1)(n + 1) ← distribute parenthesis on both sides

n + 1 + 3n - 3 = 2(n² - 1), that is

4n - 2 = 2n² - 2 ( subtract 4n - 2 from both sides )

0 = 2n² - 4n ← factor out 2n from each term )

0 = 2n(n - 2)

Equate each factor to zero and solve for n

2n = 0 ⇒ n = 0

n - 2 = 0 ⇒ n = 2

7 0

3 years ago

Middle school students were asked how they got to school each morning. There were 375 students who said they rode the bus. This

const2013 [10]

Answer:

625 students

Step-by-step explanation:

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2 years ago

The recipe for Perfect Purple Water says, "Mix 8 ml of blue water with 3 ml of red water." Jada mixes 24 ml of blue water with 9

cluponka [151]

Answer:Jada will get same shade as Perfect Purple Water

Step-by-step explanation:

STEP 1

To get the right recipe for Perfect purple water, every new mixture must have an equivalent ratio as the ideal mixture

The ideal mixture is given as

8ml blue water and 3 ml red water.

Step 2

Andre mixes 16ml blue water with 9ml red water

$\frac{8ml}{3ml}$ is not equivalent to $\frac{16ml}{9ml}$

Because dividing Andre's mixture by a common value will not give the equivalent ratio of the ideal recipe

$\frac{16ml}{9ml}$ $\frac{/}{/}$ $\frac{3}{3}$ = $\frac{5.3ml}{3ml}$

Jada mixes 24ml blue water with 9ml red water

$\frac{8ml}{3ml}$ is equivalent to $\frac{24ml}{9ml}$

Because dividing Jada's mixture by a common value gives the equivalent ratio of the ideal recipe

$\frac{24ml}{9ml}$ $\frac{/}{/}$ $\frac{3}{3}$ = $\frac{8ml}{3ml}$

This shows that Jada got the right recipe and will get same shade as Perfect Purple Water but in a higher quantity, 3 times the right recipe for Perfect Purple Water

7 0

2 years ago

One circle has a circumference of 12 pie Another circle has a circumference of 32 pie What is the ratio of the radius of the sma

UNO [17]

Answer:

3 : 8

Step-by-step explanation:

The ratio of the radii is equal to the ratio of the circumference, then ratio is

12π : 32π ( divide both parts by 4π )

= 3 : 8

6 0

2 years ago

Find the volume of a pyramid with a square base, where the side length of the base is 7.5 cm and the height of the pyramid is 10

m_a_m_a [10]

Answer:

The volume is 191.3 $cm^3$

Step-by-step explanation:

Recall that the formula for the volume of a pyramid is given by the formula:

$Volume=\frac{B\,*H}{3}$

where B is the area of the pyramid's base, and H its height. So, in our case, the base is a square of length 7.5 cm, which gives 56.25 cm^2

Now, we use this value and the height 10.2 cm to find the volume:

$Volume=\frac{B\,*H}{3}\\Volume=\frac{56.25\,*10.2}{3}\\Volume=191.25\,\,cm^3$

which rounded to the nearest tenth is: 191.3 $cm^3$

8 0

2 years ago