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3 years ago

8 crabs are on the beach. 3 more crabs come. 7 more crabs come. How many crabs in all?

Mathematics

2 answers:

Margaret [11]3 years ago

8 0

Answer:

Step-by-step explanation:

8 crabs + 3 crabs is 11, and then add 7 more crabs to get 18 crabs in all

jok3333 [9.3K]3 years ago

6 0

Answer:

Step-by-step explanation:

because 1st you do 8+3=11 then you do 11+7=18

solution is 18

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andrew11 [14]

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3 years ago

an architect wants to build three similar triangles such that the ratio of the middle triangle. The smallest one has side length

vampirchik [111]

Answer: 15

<u>Step-by-step explanation:</u>

small: 5 12 13

middle: __ 36 39

large: 45 108 117

Notice that to get from the small to the large, multiplied by 9

5(9) = 45 12(9) = 108 13(9) = 117

That is because the sides are proportional $\dfrac{5}{45}=\dfrac{12}{108}=\dfrac{13}{117}\rightarrow\dfrac{1}{9}$

To get from small to middle, multiply by 3

5(3) = 15 12(3) = 36 13(3) = 39

To solve it using proportions:

$\dfrac{5}{x}=\dfrac{12}{36}\\\\\\\text{Cross Multiply and solve for x:}\\5(36)=12x\\\\\dfrac{5(36)}{12}=x\\\\5(3)=x\\\\\large\boxed{15}=x$

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2 years ago

A bank records deposits as positive numbers and withdrawals as negative numbers. Mike withdrew $60\$60 $60 dollar sign, 60 from

kumpel [21]

Answer:

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Step-by-step explanation:

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2 years ago

What is the conjugate of -1-5i?

NARA [144]

Answer:

-6

Step-by-step explanation:

is -6

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2 years ago

6+2(7×-3) Simplify the expression

almond37 [142]

Answer:

=36

Step-by-step explanation:

$6+2(7*(-3) )\\\\=6+2(-21)\\\\=6-42\\\\=2+4-42\\\\=4-40\\\\=36$

7 0

2 years ago

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