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Black_prince [1.1K]
2 years ago
11

3x7 I need help with this i do not know the answer pls help.

Mathematics
1 answer:
kakasveta [241]2 years ago
3 0

Answer:

21

Step-by-step explanation:

7+7+7=21

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Help,anyone can help me do quetion,I will mark brainlest.​
Serhud [2]

Answer:

a)    x = 2

b)    x = 4

Step-by-step explanation:

a = (b₁ + b₂)/2 * h

----------------------------

a)

48 = (10 + x)/2 * 8

Divide both sides by 8

6 = (10 + x)/2

multiply both sides by 2

12 = 10 + x

Subtract 10 from both sides

2 = x

x = 2

---------------------------------

b)

18 = (7 + 2)/2 * x

18 = 4.5 * x

divide both sides by 4.5

4 = x

x = 4

5 0
3 years ago
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Ew Mathematics i am just filling up the space
kykrilka [37]

Answer:

For starters for the angles to be complementary they have to be 90 degrees

and angle ECD is a 52 degree angle. Next, you would need to subtract 52 degrees from 90 degrees and get an answer of 38 degrees. Making DCF a 38 degree angle.

Step-by-step explanation:

7 0
2 years ago
Ten points plus brainlist whats<br> -3 divide (-2/5)
Taya2010 [7]

Answer: 7.5

Step-by-step explanation: -2/5= -0.4 so -3/-0.4=7.5

5 0
3 years ago
Let set C = {1, 2, 3, 4, 5, 6, 7, 8} and set D = {2, 4, 6, 8}.
g100num [7]
<span>1. If it is intersection then it SHOULD be included in both the sets right? Now we know that odd numbers from 1-100 but the second set are multiples of 5 from 50-150! So we mainly need to look for common numbers which are ODD and are a MULTIPLE OF 5 BETWEEN 50 - 100!! So A={51,53,57,59,61......99} B={55,60,65,70.......95} [We stop till 100 because set A has no such element] So what is A ∩ B here? A ∩ B = {All odd numbers and multiples of 5 between 50 - 100}

</span>
6 0
2 years ago
Factor the problem: 8x^2+7x-4
Andre45 [30]

x=  

16

7−  

177

​  

 

​  

=−0.394

x=  

16

7+  

177

​  

 

​  

=1.269Step-by-step explanation:

7 0
2 years ago
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