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stich3 [128]
2 years ago
8

Triangle ABC is an isosceles triangle, and side BC is congruent to side AC. If side AC equals 40 centimeters, and AB is one-half

of side AC, what is the total perimeter of triangle ABC?
Mathematics
1 answer:
Alik [6]2 years ago
8 0

Answer:

100 cm

Step-by-step explanation:

Given:

AC = BC

AC = 40

2AB=AC

Simplify:

BC = 40

Simplify:

2AB = 40

Algebra:

AB = 20

Here's the sides:

AB = 20

AC = 40

BC = 40

Add all of them together:

100

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25° decreased by 60%
worty [1.4K]
<span>25 - (60% × 25) =
</span><span>25 - 60% × 25 =
</span>(1 - 60%) × 25 =
<span>(100% - 60%) × 25 =
</span><span>40% × 25 =
</span><span>40 ÷ 100 × 25 =
</span><span>40 × 25 ÷ 100 =
</span><span>1,000 ÷ 100 =
</span><span>10;
The answer is 10</span>
4 0
3 years ago
What is 2,665 divided by 36 witha remainder?
GarryVolchara [31]

74  R28

So sorry if its incorrect!

6 0
2 years ago
4x − 30 = ≤12 solve the inequality.
mafiozo [28]

Answer:

4x − 30 = ≤12

Step-by-step explanation:

4x − 30 = ≤12

+30 on both sides

4x≤42

divided by 4 on both sides

x≤10.5

4 0
2 years ago
Read 2 more answers
Can you help me please for this ^^
Stels [109]
Sorry it's wonky but I hope you get it if you don't I can explain again

4 0
3 years ago
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The paint mixer wants to mix paint that is 30% gloss with paint that is 15% gloss to make 3.75 gallons of paint that is 20% glos
Kipish [7]

The paint mixer should mix 1.238 gallon paint that is 30 % gloss and 2.512 gallon paint that is 15 % gloss to get 3.75 gallon of paint that is 20 % gloss.

In this question we must determine the correct volumes of each paint to obtain a 20 % gloss with paint by means of weighted averages:

c_{r} = x\cdot c_{a} +(1-x)\cdot c_{b} (1)

Where:

  • x - Proportion of the paint that is 30 % gloss.
  • c_{a} - Concentration ratio of the paint that is 30 % gloss.
  • c_{b} - Concentration ratio of the paint that is 15 % gloss.
  • c_{r} - Resulting concentration ratio

If we know that c_{a} = 0.3, c_{b} = 0.15 and c_{r} = 0.2, then the proportion of the paint that is 30 % gloss is:

0.2 = 0.3\cdot x +(1-x)\cdot 0.15

0.2 = 0.15\cdot x+0.15

0.15\cdot x = 0.05

x = 0.33

And the quantity of gallons needed of each paint are:

Paint (30 % gloss)

V_{a} = 0.33\cdot (3.75\,gal)

V_{a} = 1.238\,gal

Paint (15 % gloss)

V_{b} = V-V_{a}

V_{b} = 3.75\,gal-1.238\,gal

V_{b} = 2..512\,gal

The paint mixer should mix 1.238 gallon paint that is 30 % gloss and 2.512 gallon paint that is 15 % gloss to get 3.75 gallon of paint that is 20 % gloss.

To learn more on weighted averages, we kindly invite to check this question: brainly.com/question/18554478

8 0
2 years ago
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