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2 years ago

30 girls and boys have planned for a picnic.There is a ratio of 3 girls to 7 boys.How many boys are there?

Mathematics

1 answer:

aksik [14]2 years ago

4 0

3 times 10 is 30, 7 times 10 is 70. There are 30 girls and 70 boys.

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What is the value of |–3.25| ?

34kurt

Answer:

3.25

Step-by-step explanation:

Rule: An absolute value will always be positive.

=> Referring to the rule, the absolute value of |–3.25| is 3.25.

Hoped this helped.

$BrainiacUser1357$

3 0

2 years ago

For the geometric sequence of a1=2 and r=2 find a5

Brrunno [24]

Answer:

$a_5 = 32$

Step-by-step explanation:

The nth term for the geometric sequence is given by:

$a_n = a_1 \cdot r^{n-1}$

where,

$a_1$ is the first term

r is the common ratio

n is the number of terms.

As per the statement:

For the geometric sequence of $a_1=2$ and r=2

We have to find $a_5$

for n = 5;

$a_5=a_1 \cdot r^{n-1}$

Substitute the given values we have;

$a_5 = 2 \cdot 2^4 = 2 \cdot 16$

⇒ $a_5 = 32$

Therefore, the value of $a_5$ is, 32

3 0

3 years ago

5 x {3 x [9 - (4 + 1)]} + 20 ÷ 4 x 2 =

adell [148]

To solve a problem like this, we need to start with the innermost parenthesis. Doing that, we get to 4+1, evaluating it giving us 5. This turns our expression into 5 x {3 x [9 - 5]} + 20 ÷ 4 x 2.

Now, the innermost parenthesis is 9-5. Evaluating that gives us 4. Our expression is now 5 x {3 x 4} + 20 ÷ 4 x 2.

Once again, we go to the innermost parenthesis and evaluate whatever is there. This turns our expression into 5 x 12 + 20 ÷ 4 x 2.

Now, we can simply use order of operations to compute that the value of the expression is equal to 70.

7 0

2 years ago

Read 2 more answers

If someone can please answer the question in the picture thatd be great

Ann [662]

Answer:

≈ 20.8 ft

Step-by-step explanation:

A right triangle is formed between the wall, the ground and the ladder.

The ladder is the hypotenuse , the wall and ground are the legs.

let h be the height of the wall, then using Pythagoras' identity

h² + 33² = 39²

h² + 1089 = 1521 ( subtract 1089 from both sides )

h² = 432 ( take the square root of both sides )

h = $\sqrt{432}$ ≈ 20.8 ft ( to the nearest tenth )

5 0

2 years ago

How do you do this?????

Setler79 [48]

The lowest common multiple of 7 and 5 is 35, so you divide 365 by 35, the whole number is your answer,
the answer is 10

4 0

2 years ago