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ioda
3 years ago
12

Solve this system of by rewriting the statements into a set of 2 equations. Then solve the equations using the addition method.T

he sum of two numbers is 21. The difference of the two numbers is 19. What are the two numbers?
Mathematics
1 answer:
RoseWind [281]3 years ago
5 0
1 and 20


1+20=21 20-1=19
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Renee is a slaes associate at a store.She earns $80 a week plus a 15% commission on her sales . Last week,she sold $200 worth of
alex41 [277]
Renee earns a 15% commission on her $200 sales.
0.15 * 200 = $30
So, she earns 30 dollars from commission.

She also earns $80 a week, which makes a total of 80 + 30 = $110

Hence, the answer is $110
5 0
3 years ago
P(x) =0.02x³+0.04x²+0.3x+1.2.Evaluate P(18) by direct substitution and by applying the remainder theorm
tatiyna

Answer:

136.2

Step-by-step explanation:

Plugin x = 18 in the polynomial.

P(x) = 0.02x³ + 0.04x² + 0.3x + 1.2

P(18)= 0.02*(18)³ + 0.04*(18)² + 0.3*18 + 1.2

      = 0.02 * 5832  + 0.04*324 + 5.4 + 1.2

      = 116.64 + 12.96 + 5.4 + 1.2

      = 136.2

8 0
3 years ago
The tree in greg's backyard is 8 meters high. How high is it in centimeters
Elina [12.6K]
1 meter is 100 centimeter, as "centi" means 1 hundredth:

So 100 centimeter means 100-"1 hundredth" meters, which is 1 meter.


In short, since 1 meter is 100 centimeters, 8 meters are 800 centimeters.


Answer: 800 cm 
4 0
4 years ago
Felicia bought a jackhammer priced at $8.48. The total price, including sales tax, was $9.73. What was the sales tax percentage?
lys-0071 [83]

Answer:

14.7%

Step-by-step explanation:

GIVEN: Felicia bought a jackhammer priced at \$8.48. The total price, including sales tax, was \$9.73.

TO FIND: What was the sales tax percentage.

SOLUTION:

Price of jackhammer =\$8.48

Total price including sales tax =\$9.73

Total sales tax on jackhammer =9.73-8.48=\$1.25

Total sales tax percentage =\frac{1.25}{8.48}\times100=14.7\%

Hence the total sales tax percentage  on jackhammer is 14.7%

5 0
4 years ago
The express elevator in a skyscraper goes up 51 floors in 12¾ seconds. How many floors does the elevator go in 2 seconds? A. 8½
garik1379 [7]

the answer is A. 8 1/2, hope this helps

6 0
3 years ago
Read 2 more answers
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