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Marina86 [1]
2 years ago
15

What is -2 1/3 - (-5)=

Mathematics
1 answer:
Archy [21]2 years ago
6 0

Answer:

\frac{8}{3}

Step-by-step explanation:

- 2 \frac{1}{3}  - ( - 5)

convert mixed fraction into improper fraction.

-  \frac{7}{3}   +  ( - 5)

calculate the sum of the fraction:

\frac{8}{3}

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Please help me with questions 8-13 I need help this is for a grade
sergiy2304 [10]
For triangles, area is 1/2 base times height
8. Base 15 1/4 and height 18. Base and height can be flipped around to make the math easier, so 1/2(18)(15 1/4) = 9(15 1/4) = 9(61/4) = 549/4= 137 1/4 sq inches

9. Base 13 and height 11. Area = (1/2)(13)(11)= (13/2)(11) = 143/2 = 71 1/2 sq inches

10. Same thing again. Base = 30, height = 20, so area = (1/2)(30)(20) = 15(20) = 300 square km.

11. Base = 8, height = 5, so (1/2)(8)(5)= 4(5)= 20 square feet.

12. Base = 5, height = 3, so area = (1/2)(5)(3)= (5/2)(3)= 15/2; for 200 tiles we would take (15/2)(200)= 15(100) = 1500 square cm

13. Monica forgot to multiply base and height by 1/2.
6 0
3 years ago
Find the zeros of the quadratic function: y=x^2-4x-12
TEA [102]

Answer:

x {}^{2}  - 4x - 12 = 0 \\ (x - 6)(x + 2) = 0 \\ x = 6 \:  \: x =  - 2

8 0
2 years ago
A child's height increased from 21 to 32 inches. What was the percent increase in the child's height
iren [92.7K]

Answer:

52.4

Step-by-step explanation:

% change = 100 x final initial/initial

3 0
2 years ago
Hi anybody tell me teh answer for tim and sam
Rasek [7]

Answer:

Tim gets 8 pounds and Sam gets 32 pounds

Step-by-step explanation:

Divide 40 by 5

40/5=8

Now 8 is 1 part of the ratio. Just put it in the ratio now and you get:

Tim gets 8 pounds and Sam gets 32 pounds

3 0
3 years ago
Which two numbers add up to 10 and multiply to -24? can you help me with this?
vesna_86 [32]

Answer:

12, and -2

Step-by-step explanation:

12 + (-2) = 10

12 * (-2) = -24

6 0
2 years ago
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