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3 years ago

Can i have help with these two problems.

Mathematics

1 answer:

Gelneren [198K]3 years ago

4 0

Answer:

(11/7)x + (3/7)y

Step-by-step explanation:

Perform the indicated multiiplication. We get:

(6/7)x - (2/5)y + (5/7)y + (5/7)x

Now combine like terms, obtaining: (11/7)x + (3/7)y

An alternative expression would be (1/7)(11x + 3y)

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To find the area of a triangle you can use the expression b times h divided by 2 where b is the base of the triangle and h is it

MrRissso [65]

Answer:

Area = 24 cm²

Step-by-step explanation:

Area = 0.5 x (base x height)

Area = 0.5 x (6 x 8)

Area = 0.5 x 48

Area = 24 cm²

6 0

4 years ago

I'm a bit confused with simplifying a squared fraction. Can you explain to me how I do it?

Margaret [11]

Answer:

$\frac{\sqrt{6} }{3}$

Step-by-step explanation:

$\sqrt{\frac{2}{3} }$

$\frac{\sqrt{2} }{\sqrt{3} }$

Multiply by $\frac{\sqrt{3} }{\sqrt{3} }$ to simplify

$\frac{\sqrt{2} }{\sqrt{3} }$ * $\frac{\sqrt{3} }{\sqrt{3} }$

$\sqrt{2} *\sqrt{3} =\sqrt{6}$

$\sqrt{3} *\sqrt{3} =3$

Therefore, the final answer would be:

$\frac{\sqrt{6} }{3}$

7 0

4 years ago

Which is the mode of this data?<br><br> 12, 19, 22, 17, 15, 18, 15, 14, 16

Snezhnost [94]

Answer: 15
REMEMBER: The mode is the value that appears most frequently in a data set.

4 0

3 years ago

what is the equation in slope-intercept form for the line that passes through (3, 7) and is perpendicular to 3x-5x=8

Galina-37 [17]

Answer:

$5x + 3y = 36$

Step-by-step explanation:

First we need to rewrite 3x-5y=8 in slope-intercept form.

$y = \frac{3}{5} x - \frac{8}{5}$

The slope of this line is

$\frac{3}{5}$

The line perpendicular to this line will have a slope that is the negative reciprocal of 3/5, which is

$m = - \frac{5}{3}$

This line passes through (3,7).

The equation is given by:

$y-y_1=m(x-x_1)$

We substitute the point and slope to get:

$y - 7 = - \frac{5}{3} (x - 3)$

We multiply through by 3 to get:

$3y - 21 = - 5(x - 3)$

Expand to obtain:

$3y - 21 = - 5x + 15$

$3y + 5x = 15 + 21$

$5x + 3y = 36$

6 0

3 years ago

Cathy think 1,275 rounded to the nearest hunded is 1,200 because 2 is less than 5 what might be Cathy misundertanding about roun

madam [21]

Cathy may not understand that you look at the neighbor of your number which is seven and anything with the number 4 or less will stay the same. Which would get you 1,200 anything 5 or more you will raise the number which means that the number 1,275 rounded to the nearest hundredth would be 1,300.

8 0

3 years ago

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