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2 years ago

Write an equivalent expression. 4 + m

Mathematics

1 answer:

Natasha_Volkova [10]2 years ago

7 0

Umm maybe m+4 try that cause it’s equivalent

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15. In AABC if mZA is thirteen less than mzC and mZB is eleven less than four times m

vlabodo [156]

Answer:

$m\angle A=21$ °

$m\angle B=125$ °

$m\angle C=34$ °

Step-by-step explanation:

Let the measure of angle C be $x$ °.

Given:

In triangle ΔABC,

$m\angle A$ is thirteen less than $m\angle C$ and $m\angle B$ is eleven less than four times $m\angle C$ . This gives,

$m\angle A = x-13$

$m\angle B=4x-11$

Also, $m\angle C=x$

Now, for a triangle, the sum of all its interior angles is equal to 180°.

Therefore, $m\angle A + m\angle B + m\angle C=180$

Plug in all the values and solve for x. This gives,

$x-13+4x-11+x=180\\6x-24=180\\6x=180+24\\6x=204\\x=\frac{204}{6}=34$

Therefore, measure of angle C is 34°.

Measure of angle A is, $m\angle A=x-13=34-13=21$ °.

Measure of angle B is, $m\angle B=4x-11=4(34)-11=136-11=125$ °.

8 0

3 years ago

There are 10 marbles in a bag. 3 are red, 4 are blue, 2 are green, and 1 is yellow. You plan to draw 2 marbles from the bag with

schepotkina [342]

<h2>Probability that the second marble will be blue is 0.44</h2>

Step-by-step explanation:

There are 10 marbles in a bag. 3 are red, 4 are blue, 2 are green, and 1 is yellow.

Total number of marbles = 10

Given that first marble is yellow.

New total number of marbles = 10 - 1 = 9

Now we have 3 are red, 4 are blue, 2 are green.

Number of blue marbles = 4

We need to find drawing probability of blue marble from 9 marbles.

Let the probability be, p

$p=\frac{\texttt{Total blue marbles}}{\texttt{Total number of marbles}}\\\\p=\frac{4}{9}\\\\p=0.44$

Probability that the second marble will be blue is 0.44

4 0

3 years ago

What is the answer to this equation 3|2x - 5| = 12?

marysya [2.9K]

Its 13 i think im not sure type it in on google..

8 0

4 years ago

You randomly select one card from 52 -card deck fend the probability of selecting an ace or a 7

marta [7]

Answer:

1 in 13 cards

Step-by-step explanation:

4\ 52 simplified is 1/13

7 0

4 years ago

Find the error in the student's calculation. 2 cubed (2 minus 4) + 5 (3 minus 8). 2 cubed (negative 2) + 5 (5). 8 (negative 2) +

Sergeu [11.5K]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the question:

Find the error in the student's calculation. 2 cubed (2 minus 4) + 5 (3 minus 8). 2 cubed (negative 2) + 5 (5). 8 (negative 2) + 25. Negative 16 + 25. 9.

The student's error occurred here :

2 cubed (negative 2) + 5 (5)

(3 - 8) will give - 5 and not 5 as Witten by the student. The correct working is stated below :

2³(2 - 4) + 5(3 - 8)

Step 1:

8(-2) + 5(-5)

Step 2:

-16 + - 25

Step 3:

-41

3 0

4 years ago

Read 2 more answers