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Anon25 [30]
3 years ago
6

Which of the following is equivalent to

Mathematics
1 answer:
KiRa [710]3 years ago
8 0

Answer:

=4\sqrt{10}

Step-by-step explanation:

3\sqrt{40}-2\sqrt{10}\\3\sqrt{40}=6\sqrt{10}\\=6\sqrt{10}-2\sqrt{10}\\\mathrm{Add\:similar\:elements:}\:6\sqrt{10}-2\sqrt{10}=4\sqrt{10}\\=4\sqrt{10}

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(Evaluating Expressions) If x = 1, y = 3, and z = 2, what is the value of the expression 4xy + 3xz + 7y? *
pshichka [43]

Answer:

39

Step-by-step explanation:

4 x 1 x 3 + 3 x 1 x 2 + 7 x 3

4 x 3 + 3 x 1 x 2 + 7 x 3

12 + 3 x 1 x 2 + 7 x 3

12 + 3 x 2 + 7 x 3

12 + 6 + 7 x 3

12 + 6 + 21

39

8 0
3 years ago
9. Krista and Emily wrote an equation of a line that is parallel to the line y = 3x - 1 and passing
Andre45 [30]

Step-by-step explanation:

Hey there!

The equation, of a st. line that passes through point (5,9) is,

(y - y1) = m1(y - y1)

Put the values,

(y - 9) = m1(x - 5)

It is 1st equation.

Now, another equation is,

y = 3x-1.........(ii)

Comparing the equation with y = mx+c.

Slope (m2)= 3

As per the parallel lines,

m1=m2=3

Putting,

the value of m1 in equation(i)

(y-9)= 3(x-5)

y-9= 3x - 15

y = 3x - 6.

So, Krista equation is correct.

<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

6 0
3 years ago
There are 1,523 students at Eden Elementary School, 1,471 students at Logan Elementary School, and 2,697
Fantom [35]

Answer:

6000 students

Step-by-step explanation:

Since the added value of the total number of students would be 5691, so if you wound up, it would be around 6,000

5 0
3 years ago
Convert 25 miles into kilometres
Airida [17]

Answer:

1 miles= 1.609km

so, 25x1.609 = 40.225km

3 0
3 years ago
In Jeremiah class
Irina18 [472]
Answer:

2/5 = 4/10

4/10 = 40%

Explanation:

2/5 is a simplified fraction, and one of the bigger fractions it’s made by 4/10. Do you can use 4/10, but can also use 8/20, 20/50, 40/100, so on. Since we know that any fraction that of ten can be turned into a percentage easily (2/10=20%, 5/10=50%,9/10=%90), then 4/10 is equal to 40%. So 40% of the people in Jeremiah’s class are boys.
6 0
2 years ago
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