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nevsk [136]
2 years ago
14

In parallelogram ABCD below, AC is a diagonal, the

Mathematics
1 answer:
Vinil7 [7]2 years ago
7 0

Step-by-step explanation:

  • ABCD parallellogram
  • m< B = m< D = 40
  • in triangle ACD :

m < CAD = 180 - ( 40 + 57 ) = 83

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If 2x+ y= 10 and y=3x find the value of both x and y
Marat540 [252]

Given the set of equations:

2x + y = 10

y = 3x

Let's solve for x and y.

Here, let's use substitution method.

Substitute 3x for y in equation 1:

2x + y = 10

2x + 3x = 10

5x = 10

Divide both sides by 5:

\begin{gathered} \frac{5x}{5}=\frac{10}{5} \\  \\ x=2 \end{gathered}

In equation 2, substitute 2 for x to find y.

y = 3x

y = 3(2)

y = 6

Therefore, we have:

x = 2 and y = 6

ANSWER:

x = 2, y = 6

6 0
1 year ago
8 out of 10 dentists prefer Crest toothpaste what is the ratio of dentist who dont prefer crest toothpaste than those who do?
Nata [24]

Answer:

1:4

Step-by-step explanation:

If 8/10 prefer Crest, that means 2/10 don't prefer it.

To find the ratio, put together the number that don't prefer it to the number that does:

2:8

Simplify by dividing each side by 2:

1:4

So, the ratio is 1:4

4 0
3 years ago
Can someone help with number one
vlada-n [284]
Answer is 1 
The product of two irrational numbers will be irrational, but sometimes the product can be rational.
7 0
2 years ago
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Lisa collected leaves from different trees for a science project. Every day for a week (7 days), she collected 7 leaves. How man
tangare [24]

Answer:

49 leaves

Step-by-step explanation:

7 days x 7 leaves per day = 49 leaves in total

6 0
1 year ago
Brandon uses the steps below to solve the equation 15x +6 = 14x +5 using algebra tiles.
Fed [463]

Answer:

D. Brandon is not correct because he should have added 6 negative unit tiles to isolate the variable in step 2

Step-by-step explanation:

Key goal is to have x on one side while the other value to the right. By subtracting 14x on both sides, you would get x+6=5. You would finally subtract 6 on both sides, not 5, to get the x by itself, thus x=-1.

6 0
3 years ago
Read 2 more answers
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