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3 years ago

How do you find the missing angles? thank you pls answer will give brainliest

Mathematics

1 answer:

Alexxx [7]3 years ago

3 0

Answer:

1. 70

2. 65

3. 115

4. 65

5. 65

6. 65

7. 65

Step-by-step explanation:

All of them are correct so dont worry

Have a nice day

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Sarah cut off 1/8 of a 48 inch piece of ribbon. Jane cut off 1/9 of a 36 inch piece of ribbon. They compared their cut pieces. W

Otrada [13]

Answer:

Sarah's, 2 inches.

Step-by-step explanation:

Given:

Sarah cut off 1/8 of a 48 inch piece of ribbon.

Jane cut off 1/9 of a 36 inch piece of ribbon.

Question asked:

Whose piece is longer ?

How much longer ?

Solution:

As Sarah cut off 1/8 of a 48 inch piece of ribbon, means she has cut piece of size:

$\frac{1}{8} \ of \ 48\\\frac{1}{8} \times48 = \frac{48}{8} = 6\ inches$

As Jane cut off 1/9 of a 36 inch piece of ribbon, means she has cut piece of size:

$\frac{1}{9} \ of \ 36\\\frac{1}{9} \times36 = \frac{36}{9} = 4 \ inches$

As Sarah has 6 inches piece of ribbon and Jane has 4 inches piece of ribbon so Sarah's piece longer.

Now, to find it is how much longer we will subtract Jane's piece of ribbon from Sarah's piece of ribbon,

6 inches - 4 inches = 2 inches.

And hence, Sarah's piece of ribbon is 2 inches longer than Jane's piece of ribbon .

6 0

4 years ago

Which equation is the inverse of y = 9x2 – 4?

devlian [24]

<u>Answer:</u>-

The two inverses are,

$y = \sqrt {\frac{x+4}{9}}$

and, $y = - \sqrt {\frac{x+4}{9}}$

<u>Step-by-step calculation:-</u>

$y = 9 \times x^{2} - 4$

⇒ $x^{2} = \frac{y+4}{9}$

⇒ $x = \mp \sqrt {\frac{y+4}{9}}$

So, the two inverses are,

$y = \sqrt {\frac{x+4}{9}}$

and, $y = - \sqrt {\frac{x+4}{9}}$

8 0

3 years ago

Read 2 more answers

Car Value: In one year a new car decreased in value by 20%. If it sold for $19,400 when it was new, what was it worth after 1 ye

Phantasy [73]

20% of $19,400 is $3,880
($19,400 / 5 = $3,880)
subtract 20% from the original value
($19,400 - $3,880 = $15,520)
it's now worth $15,520

5 0

3 years ago

A factory has three machines making energy drinks. When all three machines are running, 520 drinks are made each hour. When only

Vinil7 [7]

Let A, B and C be the amount machines A, B and C, respectively, produce each hour alone.

With all three machines together produce 520 drinks each hour, we know that the addition of the amount that each produces each hour is equal to 520, that is.

$A+B+C=520_{}$

Now, similarly, machines A and B produce together 320 drinks each hour, so the sum of the amounts A and B produce each hour is equal to 320, so:

$A+B=320$

If machine C produce 30 more drinks than B each hour, than the amount of B plus 30 will be the amount of C:

$C=B+30$

So, we got the system of equations:

$\begin{gathered} A+B+C=520 \\ A+B=320 \\ C=B+30 \end{gathered}$

To solve, notice that A + B is known, because of the second equation, so we can substitute A + B by 320 in the first equation:

$\begin{gathered} (A+B)+C=520 \\ 320+C=520 \\ C=520-320=200 \end{gathered}$

Now, we can substitute C into the third equation and solve for B:

$\begin{gathered} C=B+30 \\ 200=B+30 \\ B+30=200 \\ B=200-30=170 \end{gathered}$

And, finally, we can substitute B into the second equation and solve for A:

$\begin{gathered} A+B=320 \\ A+170=320 \\ A=320-170=150 \end{gathered}$

Answers:

First box:

$A+B+C=520$

Second box:

$A+B=320$

Third box:

$C=B+30$

Fourth box:

$150$

3 0

1 year ago

The last step in a proof contains the

aleksandrvk [35]

The last step in a proof contains the conclusion.
hope this helps:)

3 0

4 years ago

Read 2 more answers