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ElenaW [278]
3 years ago
12

Can anyone help i will give extra points

Mathematics
1 answer:
nataly862011 [7]3 years ago
5 0

For question 3: 12 boys bc since 60 percent are girls, 40 percent are boys, the proportion 40/100=X/30 can be solved, 1200=100X, leaving you with X=12 boys

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Express 230 in scientific notation
son4ous [18]
2\underbrace{30}_{\leftarrow2}=2.30\times10^2=2.3\times10^2
6 0
2 years ago
Read 2 more answers
PLEASE HELP I WILL GIVE 100+ POINTS
Setler [38]
<h2>Answer: </h2>

1. <u>Area = b × h</u>

A = 5 × 3

A = 15cm².

2. <u>Area = ½(a + b) × h</u>

A = ½(9 + 15) × 15

A = ½ × 24 × 15

A = 12 × 15

A = 180mm².

3. <u>Area = 2(l × b) + l × b</u>

A = 2(12 × 4) + 6 × 3

A = 2 × 48 + 18

A = 96 + 18

A = 114m².

7 0
2 years ago
What is the surface area of this design? pls help me
V125BC [204]

Answer:

is 58in. an answer?

Step-by-step explanation:

all sides added up, 5+5=10+8=18 now the bottom, since the two sides are both 10 inches we can safely assume the other two will be 10 inches aswell, so 10+10+10+10=40.

6 0
2 years ago
Read 2 more answers
The straight line joining the points A(3,-5) and B(6,k) has a gradient of 4. Work out the value of k.
BaLLatris [955]

The straight line joining the points A(3,-5) and B(6,k) has a gradient of 4.

Gradient is the slope

So the slope of the line joining the points A(3,-5) and B(6,k) is 4

Slope of line joining two points = \frac{y_2-y_1}{x_2-x_1}

A(3,-5) and B(6,k) are (x1,y1)  and (x2,y2)

slope = \frac{y_2-y_1}{x_2-x_1}

slope = \frac{k-(-5)}{6-3}=\frac{k+5)}{3}

We know slope =4

 \frac{k+5)}{3}=4

Cross multiply  and solve for k

k + 5 = 12

k = 7

The value of k = 7

7 0
3 years ago
What is the equation 1.45x=0
Sergio [31]
1.45X=0
1.45 1.45


U divide 1.45 in each side 1.45 divided by 1.45 =x
And 1.45 divided by 0 is of course 0 cuz anything divided or
Multiplied by 0 Is always 0
Ur answer is X=1.35
3 0
3 years ago
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