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marshall27 [118]
3 years ago
6

What is 15-10c=13 worked out

Mathematics
1 answer:
exis [7]3 years ago
7 0

Answer:

15 - 10c = 13 \\ 10c = 15 - 13 \\ 10c = 2 \\ c =  \frac{2}{10}  \\ c =  \frac{1}{5}

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Which number produces a rational number when added to 0.5
Sladkaya [172]

Any number that you can completely write down on paper using digits ... and a fraction bar or decimal point if necessary ... is a rational number.  If you add it to 0.5, then the sum is another rational number.

5 0
3 years ago
Two siblings' ages have a sum of 64 years. The older sibling was born 6 years before their young sibling.
Elina [12.6K]

Hi!

So we have to make a system of equations here.

Let sibling 1 be O and sibling 2 be Y (for older and younger)

So:

O + Y = 64

O = 64 - Y

(Either one works)

The older sibling is 6 years older.

O = Y + 6

Make everything in terms of Y.

64 - Y = Y + 6

Same to both:

58 = 2y

2y = 58

Divide by 2 on both sides:

y = 29

Since the older sibling is 6 years older:

29 + 6 = 35

Y = 29

O = 35

Let me know if you have any questions.

4 0
2 years ago
Match each set of conditions with the corresponding relationship between ∆abc and ∆xyz and the criterion (if any) that proves th
sveta [45]

Answer: After matching each set of conditions with the corresponding relationship between ∆ABC and ∆XYZ and the criterion that proves the relationship the matched pairs are as follows:

1 . AB = XY ,BC = YZ and ∠B ≅ ∠Y   ⇒  ΔABC ≅ ΔXYZ by SAS criterion.

2 . AB = XY  and ∠A ≅ ∠X and ∠B ≅ ∠Y⇒ ΔABC ≅ ΔXYZ by ASA criterion.

3 .  ∠A=∠X,∠B=∠Y and ∠C=∠Z⇒  ΔABC and ΔXYZ are not necessarily congruent.[by AAA similarity criteria both triangles are similar but may not congruent ∵ every congruent triangles have equal sides and equal angles]

4 . AB = XY, BC = YZ and CA = ZX ⇒ ΔABC ≅ ΔXYZ by the SSS criterion.






4 0
3 years ago
Read 2 more answers
The length of a rectangle is 4 inches more than the width.The perimeter is 136 inches
nataly862011 [7]

lets start by labeling the rectangle. let w = width so length(l) = w+4 (i.e 4 more than the width)

Perimeter of a rectangle= sum of all the sides= l+ w+l+w=2l +2w

now  we know that p = 2l + 2w = 100

but we know that l=w+ 4

so

2(w+4) +2w=100

2w +8 +2w = 100

4w+8 =100

4w= 92

w=23

and if we substitute into 2l+2w= 100

we will get l =27.

4 0
2 years ago
60
DedPeter [7]

 Expression for percent of survey participants who chose fishing =

Explanation:

 Total number of boys = 60

 Number of boys who took part in survey = 18 + 29 =47

 Number of boys who chose fishing = 29.

 Percentage of an outcome = (Number of favorable outcome/ Total number of outcome) x 100

 Percentage of boys who chose fishing = (29/47)x100

 Expression for percent of survey participants who chose fishing =

Hope I helped! :)

4 0
3 years ago
Read 2 more answers
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