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3 years ago

Find the value of 3 4(16 - 9). 31 49 58

Mathematics

1 answer:

maw [93]3 years ago

4 0

Answer: First option is correct.

Step-by-step explanation:

Since we have given that

$3+4(16-9)$

We first solve the brackets:

(16-9) = 7

Now, we multiply it with 4

$7\times 4=28$

Now, we add 3 to it:

$28+3=31$

Hence, the value of expression would be 31.

Therefore, First option is correct.

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SOMEONE PLEASE PLEASE HELP ME

slava [35]

Answer:

taking cos

co62=b/h

cos 62=x/12

0.46947x12=x

so, x = 5.633

rounding off

x= 6

6 0

3 years ago

Read 2 more answers

Justin is asked to solve the following system of linear equations using the elimination method.

romanna [79]

Alright, lets get started.

Justin is asked to solve the linear equations using elimination method.

By using elimination method means we have to multiply some numbers in our given equations in such a way that the co-efficient of x or y become same in both equations so that we could add or subtract them to cancel one of the term either x or y.

So, given equations are :

$5x - 12 = 3$

$-20x + 14 y = 13$

See we have 5x in first equation and -20x in second equation.

So, we try to change 5x into 20 x by multiplying it with 4, both of the equations will have 20 x in common

Lets multiply 4 in first equation

$4 * (5x-12y) = 4 * 3$

$20x - 48y = 12$

Now both equations could be added and 20 x will be cancelled out and we could easily find the value of y then solve for x.

So, Justin should try to change 5 so that it will be cancels, so option B : Answer

Hope it will help :)

3 0

3 years ago

Can somebody help me thank you

arsen [322]

Surface Area of the cylinder is: <span>384.85
Volume of the cylinder is: </span><span>538.78</span>

6 0

3 years ago

Write an equation for the line that passes through the points (0, -2) and (-4, 0).

photoshop1234 [79]

The answer is C
-1/2x - 2

8 0

3 years ago

4.890 in expanded form?

dangina [55]

Answer: The student’s values are accurate as well as precise.

Explanation:

Precision refers to the closeness of two or more measurements to each other.

For Example: If you weigh a given substance three times and you get same value each time. Then the measurement is very precise.

Accuracy refers to the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 50 kg and one person weighed 49 kg and another person weighed 48 kg. Then, the weight measured by first person is more accurate.

Given: Mass = 5.000 g

Mass weighed by A has values 4.891 g , 4.901 g and 4.890. Thus the average value is

Thus as the measured value is close to the true value, the student’s values are accurate and as the values are close to each other, the measurement is precise.

6 0

3 years ago