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3 years ago

A. It is not a number square. B. Key = 5 C. Key = 4

Mathematics

1 answer:

Fofino [41]3 years ago

4 0

Answer:

C, the key of the number square is 4

Step-by-step explanation:

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Which two linear equations represent perpendicular lines? select two choices?

denis23 [38]

In order for two linear lines to be perpendicular, the product of their gradient must be -1.

Let's take y = x + b and y = -x + b
This is already in the form: y = mx + b, where m is 1 and -1 respectively.
Since the product of their gradient is -1, they are said to be perpendicular.

7 0

3 years ago

Given: m∠EYL=72° Find: mEHL , mLVE

White raven [17]

Answer:

Part 1) The measure of arc EHL is $108\°$

Part 2) The measure of angle LVE is $54\°$

Step-by-step explanation:

step 1

Let

x-----> the measure of arc EHL

y----> the measure of arc EVL

we know that

The measurement of the outer angle is the semi-difference of the arcs it encompasses.

$m$

we have

$m$

substitute

$72\°=\frac{1}{2}(y-x)$

$144\°=(y-x)$

$y=144\°+x$ ------> equation A

Remember that

$x+y=360\°$ -----> equation B ( complete circle)

substitute equation A in equation B and solve for x

$x+(144\°+x)=360\°$

$2x=360\°-144\°$

$x=216\°/2=108\°$

Find the value of y

$y=144\°+x$

$y=144\°+108\°=252\°$

therefore

The measure of arc EHL is $108\°$

The measure of arc EVL is $252\°$

step 2

Find the measure of angle LVE

we know that

The inscribed angle measures half that of the arc comprising

Let

x-----> the measure of arc EHL

$m$

we have

$x=108\°$

substitute

$m$

3 0

3 years ago

Can anybody help please i will help them also if they help me

kotegsom [21]

2- 54:81, 54/81
3- 0:101, 0/101
4- 13.5:43.8, 13.5/43.8

8 0

3 years ago

What is the area of this parallelogram? 104 m² 88 m² 56 m² 32 m²

iragen [17]

Answer: To find area of a rectangle, multiply its base (length) by its height (width). Plug in the base, 7 meters, and the height, 8 meters. So the area of Rectangle DFBE is 56 square meters.

88m

HOPE THIS HELPS

6 0

3 years ago

Which inequality is NOT true if y = -5?

sertanlavr [38]

Answer:

c is the answer

Step-by-step explanation:

solution

$3y + 9 \geqslant - 15$