Need of help with this question

Mathematics

1 answer:

Vitek1552 [10]4 years ago

8 0

Answer:

a triangle with an angle of 90°

a triangle with an angle of 55°

a triangle with an angle of 35°

Step-by-step explanation:

Every triangles angles add up to 180°. Add the choices up:

$90+55+35\\145+35\\180$

Each of the answers is an angle measure of the triangle.

You might be interested in

1). There are 25 students in grade 7. 15 are boys and others are girls. A

valina [46]

Answer: 1) 15:25 or 15/25 2) 10:25 or 10/25

Step-by-step explanation: if there are 25 students total and there are 15 boys that means the rest are girls so 25-15 is 10 girls. So the ratio for selecting a boy would be 15:25 or 15/25 and the ratio for selecting a girl would be 10:25 or 10/25

3 0

3 years ago

Read 2 more answers

B.<br> X = 4y + 3<br> 2x - 4y = -10

maxonik [38]

Answer:

$x = - 13 \: \: and \: \: y = - 4$

Step-by-step explanation:

$x = 4y + 3......(1) \\ 2x - 4y = - 10.....(2) \\ \\ \\ x - 4y = 3......(1) \\ 2x - 4y = - 10...(2) \\ - x = 13 \\ x = - 13 \\ from(1) \\ x - 4y = 3 \\ - 13 - 4y = 3 \\ - 4y = 16 \\ y = - 4 \\$

5 0

3 years ago

The equation of line WX is 2x + y = −5. What is the equation of a line perpendicular to line WX in slope-intercept form that con

borishaifa [10]

Answer: $y=\dfrac12x-\dfrac{3}{4}$

Step-by-step explanation:

Given, The equation of line WX is 2x + y = −5.

It can be written as $y=-2x-5$ comparing it with slope-intercept form y=mx+c, where m is slope and c is y-intercept, we have

slope of WX = -2

Product of slopes of two perpendicular lines is -1.

So, (slope of WX) × (slope of perpendicular to WX)=-1

$-2\times\text{slope of WX}=-1\\\\\Rightarrow\ \text{slope of WX}=\dfrac{1}{2}$

Equation of a line passes through (a,b) and has slope m:

$y-b=m(x-a)$

Equation of a line perpendicular to WX contains point (−1, −2) and has slope $=\dfrac12$

$y-(-2)=\dfrac{1}{2}(x-(-1))\\\\\Rightarrow\ y+2=\dfrac12(x+1)\\\\\Rightarrow\ y+2=\dfrac12x+\dfrac12\\\\\Rightarrow\ y=\dfrac12x+\dfrac12-2\\\\\Rightarrow\ y=\dfrac12x-\dfrac{3}{4}$