3 years ago

Which expression is equivalent to: -3a-7a+4b

Mathematics

2 answers:

pshichka [43]3 years ago

8 0

Answer:

-10a+4b

hope this answer helps you.....

nata0808 [166]3 years ago

5 0

Answer and working out. Hope it helps

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Lewis paid $13.55 for a beach chair and $5.75 for a book. How much did Lewis spend?

BartSMP [9]

Answer:

$19.30

Step-by-step explanation:

Add $13.55+5.75= $19.30

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3 years ago

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The radius of a circle is 18 in what is the area and circumference

Inessa05 [86]

Answer:

324 pi . and 36 pi

Step-by-step explanation:

Area is pi r squared, so 18x18 is 324, times pi which is 324 pi

Circumference is 2 pi r, which is 2 times 18 which is 36, times pi which is 36 pi

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3 years ago

What is the answer to the question. Solve for x

slega [8]

Answer:

Answer:

$x=\frac{75}2$

Step-by-step explanation:

Give letters, as in the attached image.

The triangles ABE and CDE are similars (AAA). In particular $AE:CE=BE:DE \rightarrow 46:30=(x+20):x \rightarrow 46x=30(x+20) \rightarrow 23x=15x+300 \rightarrow 8x=300\rightarrow x=\frac{75}2$

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2 years ago

On a map, 1 cm = 5 km. The distance between the shopping mall and the movie theater measures 6.7 cm. What is the actual distance

Fynjy0 [20]

Answer:

33.5 km

Step-by-step explanation:

If 1cm = 5km, then you multiply 6.7 by 5 to get distance, which would be 33.5 km.

(hope this helps :P)

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3 years ago

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If she can pick 52 apples in one hour how many can she pick in 45 min

inn [45]

Answer:

39 apples

Step-by-step explanation:

45 is 3/4 or 75% of an hour. So, multiply 52 by 75% to find the answer.

75% ÷ 100 = 0.75

52 x 0.75 = 39

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