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3 years ago

Help me with the number one

Mathematics

2 answers:

Bas_tet [7]3 years ago

5 0

The answer is 21 because you do 3x7.

Alla [95]3 years ago

3 0

That would be 21, it's 21 because you add seven three times. it's like adding but saying it in a shorter way. Like this for example 7+7+7=21 it still means 7×3! hoped this helped you understand a bit more!
p.s:I used to have a hard time with this to

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A video game sets the points needed to reach the next level based on the function g(x) = 10(2)x − 1, where x is the current leve

Len [333]

Answer:

The correct option is C.

Step-by-step explanation:

The given functions are

$g(x)=10(2)^{x-1}$

$h(x)=2x$

It is given that the point needed for next level is defined by the function g(x) and hardest setting promises to multiply the points needed in each level according to the function h(x) .

The total points will a player need on the hardest setting of level 5 are

$g(5)\times h(5)=10(2)^{5-1}\times 2(5)$

$g(5)\times h(5)=10(2)^4\times 10$

$g(5)\times h(5)=10(16)\times 10$

$g(5)\times h(5)=160\times 10$

$g(5)\times h(5)=1600$

Therefore the total points will a player need on the hardest setting of level 5 are 1600 and option C is correct.

3 0

4 years ago

Read 2 more answers

11. Mr Lee bought a second hand car for

Marrrta [24]

Answer :

Depends on the rate compound interest is accrued. See answers.

Step-by-step explanation:

We need the compound interest formula which is:

$A = P (1+\frac{r}{n} )^{nt}$

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

It doesn't say how frequently the interest is compounded, so we will do monthly, quarterly, and yearly.

MONTHLY

So we know the car costs $25,480 and he made a down payment of $10,000. By subtracting the down payment from the purchase price we find the loan amount.

$25,480 - $10,000 = $15,480

P = 15,480

r = 4.75% = .0475

n = 12 (12 months in a year)

t = 2

Plug everything into the compound interest formula.

$A = P (1+\frac{r}{n} )^{nt}$

$A = 15480(1+\frac{.0475}{12})^{12*2}$

$A = 15480(1+\frac{.0475}{12})^{24}$

$A = 15480(1+.00396)^{24}$

$A = 15480(1.00396)^{24}$

$A = 15480*1.0992$

$A = $17016.14$

Mr. Lee paid $17,016.14 when the bill came due at 2 years with interest compounded monthly.

QUARTERLY

P = 15,480

r = 4.75% = .0475

n = 4 (4 quarters in a year)

t = 2

$A = P (1+\frac{r}{n} )^{nt}$

$A = 15480(1+\frac{.0475}{4})^{4*2}$

$A = 15480(1+\frac{.0475}{4})^{8}$

$A = 15480(1+.0119})^{8}$

$A = 15480(1.0119)^{8}$

$A = 15480*1.099$

$A = 15480(1.099)$

$A = 17013.20$

Mr. Lee paid $17,013.20 when the bill came due at 2 years with interest compounded quarterly.

YEARLY

P = 15,480

r = 4.75% = .0475

n = 1

t = 2

$A = P (1+\frac{r}{n} )^{nt}$

$A = 15480(1+\frac{.0475}{1})^{1*2}$

$A = 15480(1+\frac{.0475}{12})^{2}$

$A = 15480(1+.0475})^{2}$

$A = 15480(1.0475)^{2}$

$A = 15480*1.0973$

$A = 16985.53$

Mr. Lee paid $16,985.53 when the bill came due at 2 years with interest compounded yearly.

4 0

4 years ago

Three of the sides will require fencing and the fourth wall already exists.

kobusy [5.1K]

Answer:kind of hard try 3x-x+2=4

Step-by-step explanation:

8 0

3 years ago

Please help on this one

kirill115 [55]

You just multiply g(x) and f(x) together and it gives you C :)

3 0

3 years ago

Read 2 more answers

Shirley is drawing triangles that have the same area. The base of each triangle varies inversely with the height. What are the p

Romashka-Z-Leto [24]

1. First, you must find the constant of variation (k). The problem indicates that t<span>he base of each triangle varies inversely with the height. So, this can be represented as below:
</span>
B=k/H

B is the base of the triangle (B=10).
H is the height of the triangle (H=6).
k is the constant of variation.

2. When you clear "k", you obtain:

B=k/H
k=BxH
k=10x6
k=60

3. Now, you have:

B=60/H

4. You can give any value to "H" and you will obtain the base of the second triangle.

5. If H=12, then:

B=60/H
B=60/12
B=5

6. Therefore, <span>the possible base and height of a second triangle is:
</span>
B=5
H=12

5 0

3 years ago