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Degger [83]
2 years ago
7

Find 2.1 x 32 Find 2.3 x 5.8 Find 7.5 x 23.4

Mathematics
2 answers:
nalin [4]2 years ago
8 0

Answer:

1. 67.2

2.13.34

3. 175.5

Step-by-step explanation:

Vladimir [108]2 years ago
5 0

Answer:

69

Step-by-step explanation:

trust me

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If 10% of a group of children are girls, what is the ratio of girls to boys​
Ipatiy [6.2K]

Answer:

9 boys to 1 girl

Step-by-step explanation:

3 0
2 years ago
A new community sports complex is being built in Erie. The perimeter of the rectangular field is 526 yards. The length of the re
notka56 [123]
<span>1 mile = 1760 yards what is the ratio of the length of an </span>
4 0
3 years ago
?????????????!???????!???!?????
Archy [21]

Answer:

249.6

Step-by-step explanation

There are 4 identical equilateral triangle,

we can find the area of one and multiply by 4

area of triangle = \frac{1}{2} *base*hight=\frac{1}{2}*12*10.4=62.4

now 62.4*4 = 249.6

6 0
3 years ago
Which is the equation in slope-intercept form for the line that passes through (3, 7)
quester [9]

Answer:

y =  -  \frac{5}{3} x + 12

Step-by-step explanation:

First, rewrite the given equation in the form of y=mx+c.

m is the gradient while c is the y-intercept.

3x-5y=8

5y= 3x -8

y =  \frac{3}{5} x -  \frac{8}{5}

Thus, the gradient of the given equation is ⅗.

The product of the gradients of perpendicular lines is -1.

(gradient of line)(⅗) = -1

gradient of line= -1 ÷⅗

gradient of line= -  \frac{5}{3}

y =  -  \frac{5}{3} x + c

To find the value of c, substitute a coordinate.

When x=3, y=7,

7 =  -  \frac{5}{3} (3) + c

7= -5 +c

c= 7+5

c= 12

Hence, the equation of the line is y =  -  \frac{5}{3} x + 12.

6 0
3 years ago
How tall is a building that casts a ​78-ft shadow when the angle of elevation of the sun is 30 degrees​?
Marta_Voda [28]

Answer: 45.03\ ft

Step-by-step explanation:

Given

The length of the shadow is 78 ft

the angle of elevation is \theta =30^{\circ}

Suppose the height of the building is h

From the figure, we can write

\tan 30^{\circ}=\dfrac{h}{78}\\\\h=78\tan 30^{\circ}\\\\h=45.03\ ft

The height of the building is 45.03 ft

8 0
2 years ago
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