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notka56 [123]
3 years ago
5

I need an answer for 27 please. Thank you. It’s due tomorrow.

Mathematics
1 answer:
Anarel [89]3 years ago
7 0

\bf \stackrel{distance}{d}~~=~~\stackrel{rate}{r}\cdot \stackrel{time}{t} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{kilometers}{k}~~=~~\stackrel{rate, km/h}{8}\cdot \stackrel{time, hours}{d}~\hfill \stackrel{km s~travelled~in~ d = 3~ hours}{k=8(3)\implies k = 24}

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I need help please help me im struggling please show WORK and tell me how to do it NO links please.
stellarik [79]

Answer:

- 7y +3 =-25

-7y=-25—3

-7y=-28

-7y÷-7= -28÷-7

y=4

Step-by-step explanation:

Take +3 to the side so that your variable and a constant is on their own sides. When a number goes over the equals sign the sign changes at becomes the inverse that's why l said - 3. You now calculate - 25—3 equals 28 then divide by 7 to find y and your y is 4.

3 0
3 years ago
A stockbroker has money in three accounts. The interest rates on the three accounts are 10 % 10%, 11 % 11%, and 12 % 12%. If she
leva [86]

Answer: he invested $200 at 10%, $400 at 11% and $600 at 12%

Step-by-step explanation:

Let x represent the amount invested in the account earning 10% interest.

Let y represent the amount invested in the account earning 11% interest.

Let z represent the amount invested in the account earning 12% interest.

If she has twice as much money invested at 11 % as she does in 10 %, it means that

y = 2x

If she has three times as much at

12 % as she has at 10 %, it means that

z = 3x

The interest from the first account is

x × 0.1 × 1 = 0.1x

The interest from the second account is

y × 0.11 × 1 = 0.11y

The interest from the third account is

z × 0.12 × 1 = 0.12z

If the total interest for the year is $136, it means that

0.1x + 0.11y + 0.12z = 136 - - - - - - - - 1

Substituting y = 2x and z = 3x into equation 1, it becomes

0.1x + 0.11(2x) + 0.12(3x) = 136

0.1x + 0.22x + 0.36x = 136

0.68x = 136

x = 136/0.68 = 200

y = 2x = 2 × 200

y = $400

z = 3x = 3 × 200

z = $600

4 0
3 years ago
Y is directly proportional to x when y=30, x=6
lbvjy [14]

Answer:

see explanation

Step-by-step explanation:

Given that y is directly proportional to x then the equation relating them is

y = kx ← k is the constant of proportionality

To find k use the condition when y = 30, x = 6

k = \frac{y}{x} = \frac{30}{6} = 5

y = 5x ← equation of proportionality

When x = 12, then

y = 5 × 12 = 60

3 0
3 years ago
Sally is selling handmade bracelets to raise money for breast cancer awareness.She created the given equation to represent her p
Anni [7]

Answer:

I believe it represents the rate at which she will receive profit ?? but I'm not sure

8 0
3 years ago
WILL GIVE BRAINLIEST
KatRina [158]

Answer:

I believe it's the first option because the y-intercept is -7

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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