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Tema [17]
2 years ago
13

18dp - 17b + 17dm - 14dm - 3b + 12dp - 12b

Mathematics
1 answer:
OLEGan [10]2 years ago
7 0
I’m not sure if the answer is correct but i believe it’s 20dp-32b+3
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Susan works as a tutor for $10 and hour, and as a waitress for $11 an hour. This month, she worked a combined total of 90 hours
uysha [10]

Answer:

\$(990-t)

Step-by-step explanation:

The correct question is

Susan works as a tutor for $10 and hour, and as a waitress for $11 an hour. This month, she worked a combined total of 90 hours at her two jobs. Let t be the number of hours Susan worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month

Let

t -----> the number of hours that Susan work as a tutor

y ----> the number of hours that Susan work as a waitress

z ---> the combined total dollar amount she earned this month

we know that

t+y=90

y=90-t-----> equation A

we know that

The combined total dollar amount she earned this month is equal to the number of hours that Susan work as a tutor multiplied by $10 plus the number of hours that Susan work as a waitress multiplied by $11

z=10t+11y ----> equation B

substitute equation A in equation B

z=10t+11(90-t)

z=10t+990-11t

z=990-t

therefore

The expression for the combined total dollar amount is $(990-t)

3 0
3 years ago
Use the substitution method to solve each linear system. 4x - 3y = -13,-2x + y = 4
alisha [4.7K]

Answer:

Step-by-step explanation:

(X,Y)=(-55/2,-38

6 0
3 years ago
Can someone help me do this
stealth61 [152]

Answer:

False.

Step-by-step explanation:

The ratio is 1:500, which means that the model will be 500 times smaller than the real deal.

The real airplane is 50 metres, or 5,000 centimetres. The model is 50 cm. 5,000 / 50 = 1,000 / 10 = 100 / 1 = 100. Since 100 is NOT equal to 500, the answer is false.

Hope this helps!

3 0
3 years ago
I need help with the last one
RoseWind [281]
The last one you’re correct , 16 is a perfect example of a perfect square
5 0
3 years ago
If ABCD is a square where A(-4;2) B(-2;-1) C(1;1) , determine the coordinates of of D​
larisa86 [58]

Answer:

(4;-1)

Step-by-step explanation:

A(-4;2)

B(-2;-1)

C(1;1)

D(-4;-1)

4 0
3 years ago
Read 2 more answers
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