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Gala2k [10]
2 years ago
15

What value of X is always

Mathematics
1 answer:
Black_prince [1.1K]2 years ago
6 0

ccccccccccccccccccccccccccccccccccc

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What is 2.7(7.8) Please show work I don't understand this question thank you!
kumpel [21]

multiplication? then...

2.7 * (7.8) = 21.06

7 0
3 years ago
Read 2 more answers
What is the measure of Angle R in PQR? Round to the nearest degree.<br><br> 26<br> 42<br> 45<br> 64
tatyana61 [14]

Answer:26

Step-by-step explanation:

6 0
3 years ago
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Provide the measure of each angle in quadrilateral RSTU​
Vikentia [17]

Answer:

R = 112, S = 64, T = 58, U = 126

Step-by-step explanation:

Quadrilateral ABCD is reflected to create quadrilateral RSTU

The angles are all the same

Since a quadrilateral equals up to 360

112+64+58=234

360-234=126

6 0
3 years ago
A multiple-choice test has 30 questions and each one has five possible answers, of which only one is correct. If all answers wer
kumpel [21]

Answer: the probability is 0.13

Step-by-step explanation:

First, each question has 5 options and only one is correct.

Then, selecting at random, the probability of getting a correct answer is equal to:

p = 1/5 = 0.20 (and the probability of getting it incorrect is p = 4/5 = 0.80)

Now, if out of 30 questions, we got 4 correct and 26 incorrect, the probability for a given combination is;

p = (0.20^4)*(0.80^26)

But we also need to multiply this by the total number of combinations.

This is we have 30 questions in total, and we can select 4 of them that will be the correct ones.

Now, if we have N objects in total, the number of different combinations of K elements out of those N elements is

C = \frac{N!}{(N-K)!*K!}

In this case, N = 30 and K = 4.

C = \frac{30!}{(30 -4)!*4!} = \frac{30*29*28*27}{4*3*2}  = 27,405

Then the probability of getting exactly 4 correct answers is:

P = (0.20^4)*(0.80^26)*27,405 = 0.13

5 0
3 years ago
between the time Mary woke up and lunchtime, the temperature rose by 11. Then by the time he went to bed, the temperature droppe
KIM [24]

Answer:

see below

Step-by-step explanation:

the temperature rose by 11.   +11

the temperature dropped by 14   - 14

Let t = temperature

The expression is

t + 11 -14

Let x be positive chips and y be negative chips

xxxxx xxxxx x

yyyyy yyyyy yyyy

The result is  -3

t-3

7 0
3 years ago
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