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Tatiana [17]
2 years ago
9

In a group of 30 children, 80%can’t swim how many children can’t swim

Mathematics
2 answers:
adoni [48]2 years ago
8 0

Answer:

24

Step-by-step explanation:

Allushta [10]2 years ago
3 0
80% is 0.8
30x0.8 is 24
So 24 cant swim
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Which triangles can have two sides of the same lenghth
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An isosceles triangle is a triangle with 2 congruent sides. The congruent sides are called legs and the third side is called the base. So if 2 sides of a triangle have the same length, then we say that the triangle is isosceles.

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Find the measure of angle X in the triangle below.
daser333 [38]
Use the Law of Sines to solve.

24/Sin 67.38 = 26/Sin X
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5 0
3 years ago
Solve: -(6x+ 8) = 4(17 - x) *
Vlad1618 [11]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
In trapezoid $ABCD$, $\overline{AB}$ is parallel to $\overline{CD}$, $AB = 7$ units, and $CD = 10$ units. Segment $EF$ is drawn
Mekhanik [1.2K]

Answer:

EF = 58/7

Step-by-step explanation:

If you extend both BC and AD to meet at P you get 3 similar triangles PAB, PEF, and PCD. Let's call BF = 3x and FC = 4x. Therefore the following proportions can be expressed:

BP/7 = (BP+7x)/10

10BP = 7*(BP+7x)

10BP = 7BP+49x

3BP = 49x

BP = (49/3)x

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EF = (BP+3x)*7/BP

EF = ((49/3)x + 3x)*7/((49/3)x)

EF = ((58/3)x*7*3)/(49x)

EF = 58/7

3 0
3 years ago
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