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Elza [17]
3 years ago
10

The length of a rectangle is 1 ft less than twice the width, and the area of the rectangle is 21 ft2 . Find the dimensions of th

e rectangle.
Mathematics
1 answer:
tatuchka [14]3 years ago
8 0
We normally think of 3x7, but the "7" is one more than 2 widths ... double the 3 and halve the 7 ==> 6 by 3.5 works ...
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How can we make a groups of 24 in 324
lys-0071 [83]
Divide 324 by 24. Which is 13.5
4 0
3 years ago
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−4.2(−2.8+4.5)​ I think I know what the answer is but I just want to be 100% sure. Please solve this and tell me your answer. I
Talja [164]

Answer:

-7.14

Step-by-step explanation:

Evaluate

−4.2(−2.8 + 4.5)​

Open parenthesis

(-4.2 * -2.8) + (-4.2 * 4.5)

= (11.76) + (- 18.9)

= 11.76 - 18.9

= -7.14

NOTE:

Negative (-) × negative (-) = positive (+)

Positive (+) × positive (+) = positive (+)

Negative (-) × positive (+) = negative (-)

Positive (+) × negative (-) = negative (-)

7 0
3 years ago
Devonte used the change of base formula to approximate log Subscript 8 Baseline 25. Which expression did Devonte use?
anyanavicka [17]

Answer:

The last choice:   log 25  Over  log 8

Step-by-step explanation:

Because the change of base formula says:

log (subscript 8)  of 25  =    log (25)  /  log (8)

let  log be the Common Log  without subscripts

3 0
3 years ago
Read 2 more answers
Kris is 2 meters tall and casts a shadow
postnew [5]

The tree is 20 m tall .

Step-by-step explanation:

<h2>Given : </h2>
  • 2m tall tree cast a shadow 4 m long .

=> 2 m tree = 4 m long

If we find shadow of 1 m tall tree = 4/2

=> we have to find height of 10 m tall tree which is .. = 4/2 × 10 = > 20 m

6 0
2 years ago
Martha divides $94 amongst her friends. Leon gets twice as much money as K. Jill gets five more dollars than Leon. Isaac gets $1
vlada-n [284]

Let me see if I can solve this on my own.

So $94 is the first amount.

It got divided so, 94÷2 = $47

So, It's either $47 or this.

47 + 47 (or times 2) = 94 again. But gets five more dollars than Leon. So 94+5= 99 then -10 = 89 but 89 ÷ 2 = 44.5 but since money can't really be half. It's eithier $44 or $45 but in my opinion is $45.

So, these are the most reasonable answers. $47 or $45. You can pick the answer that you thinks makes more sense. This took a long time so I hope this helps!

4 0
3 years ago
Read 2 more answers
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