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NNADVOKAT [17]
3 years ago
10

Help me plz fast and I will mark the brainiest

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
6 0

Answer:

a is the answer -3

Step-by-step explanation:

-3 (-3) ^2 =81

have a nice day

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A certain map scale in which 1/2 inch on the map represents an actual distance of 10 miles. A distance of x miles is represented
HACTEHA [7]

Answer:

20x

Step-by-step explanation:

A certain map scale in which 1/2 inch on the map represents an actual distance of 10 miles. A distance of x miles is represented by how many inches on this map?

From the above question:

1/2 inch = 10 miles

x inches = m

Cross Multiply

1/2m = 10x

m = 10x ÷ 1/2

m = 10x × 2

m = 20x

3 0
3 years ago
Kate had 70 brooms; Alisa had 20 more brooms than Kate. What was the ratio of Kate’s brooms to Alisa’s brooms?
Shalnov [3]

Answer:

7:9

Step-by-step explanation:

it was 70:70+90 cuz it was 20 moe than kates broom and if u simpifly that it will be 7:9 and sorry if my grammers bad im also a student lol i hope this helps. :)

4 0
3 years ago
An automobile tire loses t milliliters of tread traveling m miles. What is the independent variable?
CaHeK987 [17]
Dependent variable is dependent on the independent variable

m, because the amount of tread lost depends on how many miles you traveled
it's not, the amount of miles depends on how much tread you lost


m is indepdent

5 0
3 years ago
If Free Yer Assets Bank (FYAB) will give you 0.25% compounded quarterly and I.M.A.Q.T.π bank will give you 0.23% interest compou
ivann1987 [24]

Answer:

FYAB gives a better deal.

Step-by-step explanation:

Compound interest:

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

Continuously compounded interest:

A = Pe^{rt}

For the quarterly compounded interest, r = 0.25%, and n = 4.

2P = P(1 + \dfrac{0.0025}{4})^{4t}

1.000625^{4t} = 2

\log (1.000625^{4t}) = \log 2

4t(\log 1.000625) = \log 2

t = \dfrac{\log 2}{4\log 1.000625}

t = 277

For the continuously compounded interest, r =0.23%

A = Pe^{rt}

2P = Pe^{0.0023t}

2 = e^{0.0023t}

\ln 2 = \ln e^{0.0023t}

\ln 2 = 0.0023t

t = \dfrac {\ln 2}{0.0023}

t = 301

The quarterly compounded doubles in 277 years.

The continuously compounded doubles in 301 years.

Answer: FYAB gives a better deal.

7 0
3 years ago
Can someone please help me with this math question?
KATRIN_1 [288]
I think it would be (D. 88)

~Hope This Helped~
3 0
3 years ago
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