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3 years ago

I really need help with this and how you got it please 10 points!!

Mathematics

1 answer:

Kamila [148]3 years ago

8 0

Answer:

1 and 7 are congruent

2 and 5 are supplementary

4 and 6 are congruent

3 and 8 are supplementary

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Tameka built 1/2 of a shed on Monday and 2/5 of the shed on Tuesday Tameka finished building the shed on Wednesday what fraction

tigry1 [53]

1/10 because 1/2 =5/10 and 2/5=4/10 and 5/10+4/10=9/10 and then 10/10-9/10=1/10

5 0

4 years ago

Read 2 more answers

Y=2/3x-4 and y=-3/2x+1 are perpendicular lines. Jack notices that the product of the two perpendicular slopes is -1. If a line h

lana66690 [7]

Answer:

Slope = -b/a.

Step-by-step explanation:

Note that the relation between 2/3 and -3/2 is that their product is -1.

If the slope is a/b then we have a/b * m = -1 where m is the slope of the perpendicular line .

So m = -1 / a/b

= -b/a.

The produce = a/b * -b/a = -1.

3 0

3 years ago

Please help me with this question

coldgirl [10]

Answer:

cos(x-30)=1/2

Step-by-step explanation:

We use the following relationship to obtain cos(x)

$sin^{2}(x) +cos^{2}(x) +1$

From that, we have that cos(x)= sqrt(1-1/4)=sqrt(3) / 4

To obtain the value of cos(x-30), lets remember the following expression:

$cos(a-b)=cos(a)*cos(b)+sin(a)*sin(b)$

Therefor, we can use that to obtain our desired function cos(x-30)

cos(x)*cos(30)+sin(x)*sin(30)

$\frac{\sqrt{3} }{2} * \frac{\sqrt{3} }{2} +\frac{-1}{2}*\frac{1}{2}$

=2/4=1/2

5 0

4 years ago

Mary owned n sheep and Sam had exactly 4 times as many sheep as Mary.

Veseljchak [2.6K]

Answer:

The least value of n is, 9.

Step-by-step explanation:

Mary(M) owned the number of sheep is n i.e, M = n sheep

Sam(S) had exactly four times as many sheep as Mary , i.e, S = 4 n sheep

As per the given condition Mary buys 17 extra sheep

Now, Mary has total number of sheep, M = n +17 sheep

And Sam sells 8 of his sheep that means he has now,

But, Sam still has more sheep than Mary i.e,

Solve an inequality:

Add 8 both sides we get;

Simplify:

Now, subtract n from both the side, we get;

Simplify:

Since n is the number of sheep in integer,

then the least value of n is, 9.

8 0

3 years ago

Read 2 more answers

250 tickets are sold at a church fundraiser. if sara buys 15 tickets the probability the probability that she will win the prize

laila [671]

<span>the probability the probability that she will win the prize quilt:
= 15/250
= 0.06
= 6%

</span>

3 0

4 years ago