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Gnesinka [82]
3 years ago
11

Please help me 7th grade math operations with rational numbers

Mathematics
1 answer:
Katena32 [7]3 years ago
5 0
1. Stock Market:
If a stock price decreased $2 per day for four days, then the total change in value of the stock is $8. (2 x 4)
Answer: $8.

2. Evaporation:
With the given information, we can infer that if 3 inches of water in a tank decreases each week, then 15 inches of water would decrease over the course of 5 weeks. (3 x 5)
Answer: 15 inches.

3. Football:
If a football team lost 9 yards on 3 consecutive plays, then the team's total change in position is 27 yards. (9 x 3)
Answer: 27 yards.

Hope this helps! Good luck.
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For every pound a company spends on advertising, it spends 59 pence on its website. Express the amount spent on advertising to i
Tom [10]

Answer:

100:59

Step-by-step explanation:

1 pound = 100pence

59 pence

100:59

4 0
3 years ago
The cartesian coordinates of a point are given. find polar coordinares of the point where r<0 and
Ad libitum [116K]

Find the polar coordinates in the usual way, then negate r and add 180° to θ.


You know that

... r = √(x² + y²)

... θ = arctan(y/x) . . . . . taking quadrant into account


The coordinates (r, θ) and (-r, θ+180°) specify the same point.

8 0
3 years ago
(1 pt) What is the measure of ∠Z? A. 57° B. 65° C. 94° D. 115°
Anestetic [448]
Hi it is 57  is a becase use a protractor
7 0
4 years ago
Read 2 more answers
2.49 divied by 48 1/8 i will mark you brainlist
Monica [59]

2.49 divied by 48 1/8

make 2.49 into an mixed number first

2 49/100.

make 2 49/100 into an improper fraction

Mutiply the whole number with the denominator

2*100= 200

Add 200 with the numerator. 200+49= 249

2 49/100= 249/100

48 1/8-make it into a improper fraction

48 1/8=385/8

249/100* 8/385

Answer: 0.05

5 0
3 years ago
4. What is the product of (3x - 1)(x + 4)?<br> HELP PLEASE RIGHT NOT SHOW YOURE WORK!!!!!
LUCKY_DIMON [66]

3 {x}^{2}  + 11x - 4

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}

(3x - 1)(x + 4) \\ \\   = 3x(x + 4) - 1(x + 4) \\  \\  = 3 {x}^{2}  + 12x - x - 4 \\ \\   = 3 {x}^{2}  + 11x - 4

\bold{ \green{ \star{ \orange{Mystique35}}}}⋆

4 0
3 years ago
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