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kari74 [83]
4 years ago
10

Can someone please help

Mathematics
1 answer:
Inga [223]4 years ago
3 0

Answer:

15 boys.

Step-by-step explanation:

A class constituting of boys and girls:

Has a total of 35 students.

The number of girls outnumber that of boys by 5.

Let the number of boys be x such that the number of girls is x + 5.

∴

x + x + 5 = 35

2x + 5 = 35

2x = 35 - 5 = 30

x = 30/2 = 15

So there are 15 boys and 35 - 15 = 20 girls.

*<em>I believe you can now solve the second question.</em>

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elena-s [515]

Answer:

The room is 19,5m long and 13m wide.

Step-by-step explanation:

1cm -> 6,5m

3cm -> 19,5m

2cm -> 13m

3 0
3 years ago
Complete the square to transform the expression x2 + 4x + 2 into the form a(x − h)2 + k.
Nina [5.8K]

Answer:

Step-by-step explanation:

y = (x^2 + 4x)      + 2

Take 1/2 of the linear term 4/2 = 2 and square that result. 2^2 = 4.

Put it after 4x

y = (x^2 + 4x + 4)   +2  Subtract what you put inside the brackets on the outside.

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y = (x^2 + 4x + 4) - 2            Express the brackets as a square.

y = (x + 2)^2 - 2

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3 0
3 years ago
$3000 is invested at 3% annual interest for 3 years.<br> a. Simple Interest b. Compound Interest
stich3 [128]

Answer:

a. $270

b. $3,278.18

Step-by-step explanation:

Given that

The principal amount is $3,000

Annual rate of interest is 3%

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We need to find out the simple interest & compound interest

The following formulas should be used

a. For simple interest

= Principal × rate of interest × time period

= $3,000 × 3% × 3 years

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b. For compound interest

= Principal × (1 + rate of interest)^time period

= $3,000 × (1 + 0.03)3

= $3,000 × 1.03^3

= $3,278.18

8 0
3 years ago
Given that 1 inch = 2.54 cm, how many centimeters are there in 7 feet?
Zanzabum
The answer is 216.72 cm
8 0
3 years ago
Read 2 more answers
Can somebody help me with this pls thank you.
prisoha [69]

Answer:

The place value is the Tenths. and the other answer is 0.7

Step-by-step explanation:

Since 2 is under 4 then 7 stays the same so the number will be 0.7

7 0
3 years ago
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