I really need help please

Mathematics

2 answers:

dem82 [27]2 years ago

7 0

0.3 for the first one
0.4 for the second

Ahat [919]2 years ago

4 0

Answer:

the first one and the fith one

Step-by-step explanation:

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Maria's math test had 25 questions she got 84% correct how many did she get wrong

inysia [295]

$\frac{x}{25}=84% \\ \frac{x}{25}=.84 \\ 25( \frac{x}{25})=(.84)(25) \\ x=21$
Maria got 21 correct.

Number wrong = Total - Number right
y = 25 - 21
y = 4

Maria got 4 wrong.

Hope this helps!

7 0

2 years ago

Read 2 more answers

Which is greatest 3/5, 0.70, or 65%? Tell how you know.

Leni [432]

3/5 = .60, 65% = .65, 0.70 is the greatest

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2 years ago

mya has ballet lessons every sixth day and swimming every fourth day. today she has both lessons. in how many days will mya have

ra1l [238]

To determine when Mya will have both lessons again on the same day, you will list the multiples of each number of days because to show every 4 or 6 days, you will count by 4's and 6's.

When you get to the first number that is the same, that will be the next time she will have both lessons again. This is called the least common multiple (LCM).

4, 8, 12, 16, 20, ...
6, 12, 18, 24

In 12 days she will have both lessons again.

5 0

3 years ago

In the diagram, VZ/YZ=WZ/XZ. To prove that △VWZ ~ △YXZ by the SAS similarity theorem, which other sides or angles should be used

Vitek1552 [10]

Answer:

The angles $\angle VZW\cong \angle YZX$ are used to prove the similarity of triangles VWZ and YXZ.

Step-by-step explanation:

Given information: $\frac{VZ}{YZ}=\frac{WZ}{XZ}$

Two triangles are called congruent if their corresponding sides are in same proportion or the corresponding angles are same.

If two corresponding sides of triangle have same proportion and their inclined angle is same, then by SAS rule of similarity both triangles are similar.

From the given figure it is noticed that the ∠VZW and ∠YZX are vertically opposite angles. The vertically opposite angles are always equal.

$\angle VZW=\angle YZX$ (Vertically opposite angles)