jdkrisdaimcc11
19.02.2021 •
Mathematics
Directions: Show all your steps as you solve the following problems. Round the solutions to the nearest hundredth if necessary.
7. On a 40‐point test, Steve received an 80%. How many points did he receive on the test?
8. Of the 8760 hours in a year, most televisions are on for 2190 hours. What percent is this?
9. The population of a town increased from 620 to 700. What is the percent of increase?
10. The population of a small town increased 23% from its population in 2000 to its population in 2003.
If the population of the town in 2000 was 25,314, what was its population in 2003?
11. To control his weight, Joel reduced his calorie intake from 2500 calories to 1950 calories each day. What was his percent of decrease for calorie intake?
12. The sales tax in Whittle City is 7%. How much tax is charged on a purchase of $53?
13. What is the simple interest on $2500 invested at an interest rate of 6% for 2 years?
14. Shawn earned a 5% commission on a $500 sale. How much did he earn?
15. Andrew measured the time it took for an apple to fall 50 feet as 1.95 seconds, but his calculations show that it should be 1.77 seconds. What was his experimental error?
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Ответ:
7. St eve got 32 points
8. IS 25%, YOU FI ND OUT BY D IVIDI NG 8760/100=87.60 WHICH REPR ESENTS 1 PER CENT AND THEN 21 60/87.60=25%
ALSO, IF YOU DIVIDE 8760/2190=4, SO THIS RE PRES ENTS 25%
HOPE IS CLEAR
9. 12.9%
10. 23% of 25,314 = 25,314 x .23 = 5822 then add that to the origi nal pop ulation. 25,314 + 5,822 = 31,136
11. 22% d ecrea se. Jo el is con su ming 7 8% of the amo unt of ca lor ies he previou sly c ons umed.
12. 56.71
13. Id k
14. $25
15. 1.77
Step-by-step explanation:
Take the total score and multiply by the perce ntage recei ved
40 * 80%
Chan ge to dec imal for m
40 * .80
32
S teve got 32 points
14. 5% of 500 = 0.05 × 500 = 25
Ответ:
sorry I don't know
Step-by-step explanation:
Ответ:
l non it but now l don't sorry,