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2 years ago

What is 10 times 0.84?

Mathematics

2 answers:

s344n2d4d5 [400]2 years ago

6 0

10 times 0.84 is 8.4 or 8.40 is completely fine as well.

aliya0001 [1]2 years ago

3 0

Answer:

8.4 I promise it’s correct

Step-by-step explanation:

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What is q? For this 30 and 60, 90 angle?

Effectus [21]

30 60 90 triangle
ratio of short leg : long leg = a : a√3

Given long leg = 9 cm
so
short leg = 9 / √3
= 3√3
= √27
= 27^(1/2) <..........(radical form)

Hope it helps.

8 0

2 years ago

Write an equation for each line. y intercept of -2,1, x intercept of 3.5

grandymaker [24]

Y = -2.1 , x = 3.5 the first line will be horizontal and the other will be vertical

8 0

3 years ago

Solve the equation 3x+5y=15 for y

larisa86 [58]

3x+5y = 15
5y = -3x + 15
y = -3/5(x) + 3

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7 0

3 years ago

Use the net as an aid to compute the surface area (rounded to the nearest integer) of the triangular pyramid with an equilateral

aleksandrvk [35]

Answer:

Correct answer is $C)\ 254\ m^{2}$

Step-by-step explanation:

As per the given diagram, we know the following details:

Height of the triangular pyramid is 14m.

Side of base = 10m

Height of Triangular base = 8.7m

Formula for surface area of triangular pyramid:

$\text{Area = Area of Triangular base + 3 }\times\text{Area of side triangle}$

(Triangular base is shown in the dotted lines in the question figure.

The other 3 triangles are the side triangles.)

We know that,

$\text{Area of a triangle = }\dfrac{1}{2} \times \text{Base} \times \text{Height}$

$\Rightarrow \text{Required Surface Area = } \dfrac{1}{2} \times 8.7 \times 10 + 3 \times \dfrac{1}{2} \times 14 \times 10\\\Rightarrow \dfrac{1}{2}\times (87 + 3 \times 140)\\\Rightarrow \dfrac{1}{2}\times (87 + 420)\\\Rightarrow \dfrac{1}{2} \times 507\\$\approx$ 254 m^{2}$

Hence correct answer is $C)\ 254\ m^{2}$ .

3 0

2 years ago

Let x △ y be defined by x △ y=x−5y. What is the value of 3 △ (−4)

TEA [102]

$x\Delta y=x-5y\\\\3\Delta(-4)\qquad\text{put the values x = 3 and y = -4 to the expression x - 5y}:\\\\3\Delta(-4)=3-5(-4)=3+20=23$

5 0

3 years ago