13. Simplify: 6x+8/4x+4 A. x+7/8 B. 3x+4/2(x+1) C. 5x+9/3x+8 D. x-10/x-6

which has the greatest mass? a.) 3.88 x 10^22 moecules of O2, b.)1.00 g of O2, C.)0.0312 mol of O2, D.) All of these have the sa

tresset_1 [31]

The right option is A.

8 0

3 years ago

Simple 9th grade math

Liono4ka [1.6K]

Answer:

-1078

Step-by-step explanation:

To find the nth term in an arithmetic sequence we use the following formula

aₙ=a₁+(n-1)*d

Where a₁ is the first time, and d is the common difference (in this case -20)

So we have

2+(55-1)*-20

2+(54)*-20

2-1080

-1078

5 0

2 years ago

The scale model of a rectangular garden is 1.5 ft by 4 ft. The scale model is enlarged by a scale factor of 7 to create the actu

LenaWriter [7]

It is given that the scale model of a rectangular garden is 1.5 ft by 4 ft. The scale model is enlarged by a scale factor of 7 to create the actual garden.

Therefore, we can see clearly that the width of the scale model is 1.5 feet. Hence, the width of the actual garden which has been enlarged by a scale factor of 7 will be 7 times the width of the scale model.

Thus the width of the actual garden will be: $1.5\times 7=10.5$ feet

In a similar fashion the length of the actual garden will be $4\times 7=28$ feet

Thus, the area of the actual garden will be:

$Area=Length\times width=10.5\times 28=294$ $ft^2$

As we can see, out of the given options, the last option is the correct one.

6 0

2 years ago

Read 2 more answers

H(t)= (t+3)^2 + 5

oee [108]

Answer:

The average rate of change for the given function in the interval (-5, -1) is 0 (zero)

Step-by-step explanation:

The average rate of change of a function over an interval is the quotient between the difference between the function evaluated at the ends of the interval divided by the length of the interval. That is for our case:

the average rte of change of h(t) in the interval (-5, -1) is:

$\frac{h(-1)-h(-5)}{-1+5}$

so we find:

$h(-1)=(-1+3)^2+5=2^2+5=4+5=9\\and\\h(-5)=(-5+3)^2+5=(-2)^2+5=4+5=9$

then the average rate of change becomes:

$\frac{h(-1)-h(-5)}{-1+5}=\frac{9-9}{4} =\frac{0}{4} =0$

5 0

2 years ago

8. Video games are on sale this week for 20% off. The video game originally costs $42.

Phoenix [80]

Answer:

$8.4
$33.6
I= $384

Step-by-step explanation

Amount of discount: 20%= 0.20; 0.20×42= $8.4
Sale price: $42-$8.4= $33.6

For interest question, plug in the values:

P= $3200

r= 3%÷100 = 0.03

t= 4 years

Calculate:

I=Prt

= 3200×0.03×4

=$384

3 0

2 years ago