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taurus [48]
3 years ago
12

Can someone help me with #10 please

Mathematics
2 answers:
Aleksandr [31]3 years ago
8 0

X=11 because 90-43+5x-8 so 5•11=55-8 =47 90-43=47

chubhunter [2.5K]3 years ago
6 0

Complementary means the angles together would equal 90°. Supplementary means the angles would equal 180°.

Using Complementary angles:

5x-8+43=90 Combine -8 and 43 = 35

5x+35=90

-35 -35

5x=55

Divide each side by five

x=11

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Sophia uses 18 beads to make a necklace. Three sixths of the beads are purple. How many beads are purple?
tatuchka [14]

Answer:

9 beads are purple

Step-by-step explanation:

we know that

To find out how many  beads are purple, multiply the total beads by the fraction of the beads that are purple

so

18(\frac{3}{6})=9\ beads

therefore

9 beads are purple

Another way to solve the problem is convert the fraction in percentage

we have

\frac{3}{6}=\frac{1}{2}=0.50*100=50\%

so

If the total are 18 beads

50% is 9 beads

therefore

9 beads are purple

4 0
3 years ago
Victoria knit a total of 18 centimeters of scarf over 3 nights. How many nights will victoria have to spend knitting in order to
svet-max [94.6K]
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7 0
3 years ago
A square has a perimeter of 44yd. What is the length of each side?
Natasha_Volkova [10]

Answer:

11 yd

Step-by-step explanation:

44/4 = 11

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5 0
3 years ago
Select the assumption necessary to start an indirect proof of the statement. If 3a+7 < 28, then a<7.
pashok25 [27]
When applying indirect proofs, we assume the negation of the conclusion is true, and show that this assumption would lead to nonsense, or contradiction.

In our case we assume a is not smaller than 7, that is we assume a≥7.

a≥7 then, multiplying both sides by 3:
3a≥21, then, adding both sides 7:

3a+7≥28,

which is a contradiction because 3a+7 is smaller than 28.

So our assumption is wrong, which means the opposite of it is correct.


Answer: assume a≥7
7 0
3 years ago
Measure E is equal to?
Gennadij [26K]

Answer:

114

Step-by-step explanation:

Since DE and EF are equal, DEF is an isosceles triangles.

In isosceles triangle, two angles are equal.

So,

∠F = ∠D = 33

Sum of interior angles in a triangles is 180,

∠D + ∠F + ∠E = 180

33 + 33 + ∠E = 180

∠E = 180 - 33 - 33

∠E = 114

7 0
3 years ago
Read 2 more answers
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