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Margaret [11]
3 years ago
5

Divide then check with multiplication the first on is done for u 89÷21=

Mathematics
2 answers:
erica [24]3 years ago
8 0
89 divided by 21 is 4.23 then add a notation bar above the 3
nekit [7.7K]3 years ago
8 0
You can use related facts to help you. For example, 21 x ? = 89? 89/21= 4.328
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Please help me ill mark you brainiest
Ann [662]

Answer:

55.560

Step-by-step explanation:

I imputed the equation in my calculator

5 0
3 years ago
In trapezoid ABCD, AC is a diagonal and ∠ABC≅∠ACD. Find AC if the lengths of the bases BC and AD are 12m and 27m respectively.
xz_007 [3.2K]

Answer:

Length of diagonal is 18 m

Step-by-step explanation:

Given in trapezoid ABCD. AC is a diagonal and ∠ABC≅∠ACD. The lengths of the bases BC and AD are 12m and 27m. We have to find the length of AC.

Let the length of diagonal be x m

In ΔABC and ΔACD

∠ABC=∠ACD      (∵Given)

∠ACB=∠CAD      (∵Alternate angles)

By AA similarity theorem, ΔABC~ΔACD

∴ their corresponding sides are proportional

\frac{x}{27}=\frac{12}{x}=\frac{AB}{CD}

Comparing first two, we get

⇒ \frac{x}{27}=\frac{12}{x}

⇒ x^2=27\times 12

⇒ x=\sqrt324=18

hence, the length of diagonal is 18 m



4 0
3 years ago
Round 103,475 to the nearest ten thousands place:
julsineya [31]

Answer: 103,000

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Helpppppppppppp meeee​
nikklg [1K]

Answer:

25z^{4} + 30z³ + 29z² + 12z + 4

Step-by-step explanation:

(5z² + 3z + 2)²

= (5z² + 3z + 2)(5z² + 3z + 2)

Each term in the second factor is multiplied by each term in the first factor, that is

5z²(5z² + 3z + 2) + 3z(5z² + 3z + 2) + 2(5z² + 3z + 2) ← distribute parenthesis

= 25z^{4} + 15z³ + 10z² + 15z³ + 9z² + 6z + 10z² + 6z + 4 ← collect like terms

= 25z^{4} + 30z³ + 29z² + 12z + 4

4 0
2 years ago
8^6 divided by 8? Please help
Paladinen [302]

Answer:

32768

Step-by-step explanation:

6 0
2 years ago
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