All categories

2 years ago

Can anyone help me please

Mathematics

1 answer:

Vera_Pavlovna [14]2 years ago

5 0

Answer:

1. 5(3+9) = (5 x 3) + (5 x 9)

2. (7+8)6 = (6 x 7) + (6 x 8)

3. 51 x 9 + 51 x 31 = 459 + 1581 = 2040

4. 17 x 13 + 51 x 13 + 32 x 13 = 221 + 663 + 416 = 1300

These should all be right :)

I used PEMDAS and the distributive property.

You might be interested in

If the area of the blue square is 25 in2 and the area of the green square is 15 points

galben [10]

Answer:

144 in²

Step-by-step explanation:

6 0

2 years ago

A 15-foot ladder leans against a house. The bottom of the ladder is 7 feet from the house. To the nearest degree, what angle doe

max2010maxim [7]

The ladder is forming a right triangle with the house. In this right triangle the hypotenuse is the measure of the ladder, and the distance between the house and he ladder is one of the sides of the triangle. To find the angle, $\alpha$ , that the ladder is making with the ground, we are going to use a trig function that relates the adjacent side of our angle with the hypotenuse. That trig function is Cosine.
$Cos \alpha = \frac{adjacent.side}{hypotenuse}$
$Cos \alpha = \frac{7}{15}$
$\alpha =arcCos( \frac{7}{15} )$
$\alpha =62.2$

We can conclude that the ladder make with the ground a 62° angle.

7 0

2 years ago

I will mark brainliest to whoever gets this answer! Please help!

lisov135 [29]

Answer:

20 yd²

Step-by-step explanation:

This problem is really easy once you break it down!

First, find the area of the triangle.

$A = \frac{1}{2}bh$

b = 5 + 3 = 8

h = 4 + 4 = 8

$A = \frac{1}{2}*8*8$

$A = 32$

Now find the area of the square.

$A = lw$

$A = 4*3$

$A = 12$

The last step is to subtract.

Area of triangle - area of rectangle =

32 - 12 = 20

20 yd²

Hope this helped! :)

4 0

3 years ago

Read 2 more answers

9) What is the x-coordinate of point A in a triangle with vertexes in A (3, 5), B(6, – 3) and C (-2, - 2) after

avanturin [10]

A because that's the only one that makes sence

5 0

2 years ago

A handyman and his helper worked on the same job. The ratio of the handyman’s page to the helpers pay was 7 to3. If the total fe

Ganezh [65]

You would first add the two parts of the ratio to get ten, then divide 120 by ten to get 12. This means that each part of the ratio is worth 12 dollars, so to get the helper’s salary you would multiply 12 by three to get a total of 36.

3 0

3 years ago