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Archy [21]
3 years ago
6

Julie built a tower of blocks that stood 22.5 cm tall. Each block is 1.5 cm tall. How many blocks are in the tower? A. 16 B. 15

C. 1.6 D. 1.5
Mathematics
2 answers:
sergejj [24]3 years ago
7 0
22.5 cm* (1 block/ 1.5 cm)= 15 blocks.

The correct answer is B. 15~


Phantasy [73]3 years ago
5 0
Divide.

22.5 / 1.5
= 15

Julie built a tower with 15, 1.5 cm blocks.
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According to the general equation for conditional probability, if P(A upside down u B)= 5/7 and P(B)=7/8 , what is P(A|B)?
natta225 [31]
P(A | B) = \frac{P(A \cap B)}{P(B)}


P(A|B) = \frac{5/7}{7/8}


P(A|B) = \frac{5}{7} \div \frac{7}{8}


P(A|B) = \frac{5}{7}\times\frac{8}{7}


P(A|B) = \frac{5*8}{7*7}


P(A|B) = \frac{40}{49}
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3 years ago
Fin the product of -3+1i and its conjugate
neonofarm [45]
If u are using i as a variable the answer would be i= 3.
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3 years ago
Masha biked 20km 20 minutes faster than Dasha biked 20km. Find the speed of each cyclist if one biked 2km/h faster than the othe
motikmotik

Answer:

  • 12 km/h and 10 km/h

Step-by-step explanation:

Let the speed of Masha = s, speed of Dasha = d

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<u>As per above info we get following equations:</u>

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<u>Substitute s and solve for d:</u>

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<u>Get rid of fraction by multiplying all terms by 3d(d + 2):</u>

  • 60d + d(d + 2) = 60(d + 2)
  • 60d + d² + 2d = 60d + 120
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<u>Find s:</u>

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<u>The answer is</u>

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3 years ago
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Vladimir [108]
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72-4.5x=42-7.5x
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7 0
3 years ago
A rectangular balcony has an area of 32 square feet. its perimeter is 24 feet. what are the dimensions of the balcony?
Paul [167]

Answer:

Step-by-step explanation:

8 ft by 4 ft

8ft x 4ft = 32 ft

8ft + 8 ft = 16 ft  4 ft + 4 ft = 8 ft

16ft + 8 ft = 24 ft

5 0
3 years ago
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