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3 years ago

Can someone solve this question?

Mathematics

1 answer:

Rom4ik [11]3 years ago

3 0

The triangles are isosceles. The following notation are for the angles. For example ABD is refer to the angle located in the B vertex, formed by the segments AB and BD.

$ABD = ADB\\40 + 2ADB = 180\\ADB = 70 = ABD\\$

$70 + DBC + 30 = 180\\DBC = 180 - 100 = 80$

Then

$BCD = BCD\\2BCD + 80 = 180\\BCD = 50$

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3. Molly bought four rose bushes for $16.40 each. Use

N76 [4]

Answer:

$65.60

Step-by-step explanation:

4×16.40 = 4×(16+0.40) = (4×16) + (4×0.40) = 64 + 1.60 = 65.60

4 0

2 years ago

The density of water is 1 gram per cubic centimeter. A more dense object will sink, and a less dense object will float. Will a m

Bogdan [553]

Ah clever. So you need two formulas.

1) Volume of the marble.

4(pi)r^3/3
= 4(pi)(1.4)^3/3
<span>= 11.49 (approx)
</span>
2) Formula for density.

D = M / V
= 9 / 11.49
= 0.78

0.78 < 1

Therefore the marble will float.

8 0

3 years ago

Read 2 more answers

What is the y-intercept of a line parallel to y = 3x - 4 that passes through the point (2,3)

MrRa [10]

Y-3=3(x-2)
y-3=3x-6 :-x=0
y-3=0-6
y=-6+3
y=-3

8 0

3 years ago

For the triangles to be congruent by hl, what must be the value of x? 8 9 17 34

lora16 [44]

Using equations we know that the value of x needs to be (E) 4 to make HL congruent to AC.

<h3>What are equations?</h3>

A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions.

The point-slope form, standard form, and slope-intercept form are the three main types of linear equations.

So, HL is a hypotenuse that will be congruent to the hypotenuse AC.

We know that HL is 3x + 3.

Ac is 15.

Then the equation will be:

3x + 3 = 15

Now, solve the equation to get x as follows:

3x + 3 = 15

3x = 15 - 3

3x = 12

x = 12/3

x = 4

Therefore, the value of x needs to be (E) 4 to make HL congruent to AC.

Know more about equations here:

brainly.com/question/28937794

#SPJ4

Correct question:
For the triangles to be congruent by hl, what must be the value of x?

a. 8

b. 9

c. 17

d. 3

e. 4

8 0

1 year ago

The value of 6/√12 −√3 is <br>(A) √3 (B) -6√3 (C) 6√3 (D) 2√3

Taya2010 [7]

Answer:

(D) 2√3

Step-by-step explanation:

From the above question ,we are asked to solve for:

6/√12 −√3

In other to simplify, we would expand the numerator of 6/√12

So we have;

= [6/(√4 ×√3)] - √3

= (6/ 2 ×√3) - √3

= (6/2 × √3) - √3

= (3 ×√3) - √3

= 3√3 - √3

= 2√3

Therefore, the value of 6/√12 −√3 is

option (D) 2√3

6 0

3 years ago