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Aleonysh [2.5K]
3 years ago
6

Evaluate the following expression: 4 + (3x +y) When x = 2 and y = 9

Mathematics
1 answer:
aev [14]3 years ago
5 0
3 x 2 is 6 after that you jus add 6+9+4 which is 19
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Calculate the geometric mean of 2 and 200
kakasveta [241]
The geometric mean of 2 & 200 is *(20)*
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The sum of two numbers a and b is 7 and the difference between them is 2. What is the value of a x b ? Give your answer as a mix
Andre45 [30]

Answer:

45/4

Step-by-step explanation:

We can interpret the question to have two equation which can be solve simultaneously

a+b=7------------(1)

a-b=2------------(2)

From eqn(2) make a subject of formula

a=2+b--------(3)

Substitute the (3) into eqn(1)

a+b=7------------(1)

2+b+b=7

2b=7-2

2b=5

b=5/2

From equation (3) substitute value of b to find a

a=2+b--------(3)

a= 2+5/2

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Then What is the value of a x b ?

9/2× 5/2

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3 years ago
What is the measure of x? Please help!
Zepler [3.9K]

Answer:

x =√[y²+(27)²] = √[ z² - 3² +(27)²]

Step-by-step explanation:

step 1) x=√[y²+(27)²]

step 2)

We find y

z²=y²+3² → y² = z² - 3²

step 3) x = √[ z² - 3² +(27)²]

7 0
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Yes or no? Thanks!!!
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I think is yes but I’m not sure
8 0
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Read 2 more answers
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aksik [14]

Answer:

3/40 = 7.5%

Step-by-step explanation:

3/40 percent error.

3/40 = 7.5%

6 0
3 years ago
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