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3 years ago

How do I solve (21/12)/(7/12) ?Is the answer 3?

1 answer:

5 0

It is! When you're doing a fraction specifically like that, the denominators cancel out. Therefore you can get rid of the 12. It just becomes 21/7, which as you know is 3.

Hope that helps :)

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To use unit analysis to convert 7 feet to yards you could use: (DO NOT CONVERT!)To use unit analysis to convert 7 feet to yards

Sonja [21]

Answer:

7ft/1yd ⋅1yd/3ft

Step-by-step explanation:

To use unit analysis to convert 7 feet to yards

Using unit analysis

1 yard = 3 feet

Hence

3 feet = 1 yard

7 feet = x yard

Cross Multiply

3 feet × x yard = 7 feet × 1 yard

We can represent this as

7 feet/1 yard × 1 yard/3 feet

The correct Option is :

7ft/1yd ⋅1yd/3ft

8 0

3 years ago

4-11 help pleaseeee‼️

mixer [17]

I will do #4.
First divide by 5.
6x^2 + 7x + 3.
When trying to factor this, I've come to realize that it is unfactorable.

3 0

3 years ago

What is the answer to 6x-8

Readme [11.4K]

The answer to 6 x (-8) = -48

It is -48 because anytime you multiply one negative to one positive it will be negative if you multiply two negative's it come out to be a positive

Hope this helps

Have a wonderful day

7 0

3 years ago

The points (2, r) and (6, -4) lie on a line with slope 4. Find the missing coordinate r R=

Rus_ich [418]

$\text{The slope-intercept form:}\ y=mx+b\\\\\text{We have:}\ m=4\\\\\text{then}\ y=4x+b\\\\\text{The line passes through point (6; -4). Substitute:}\\\\(6;-4)\to x=6;\ y=-4\\\\-4=4\cdot6+b\\-4=24+b\ \ \ |-24\\b=-28\\\\\text{therefore:}\ y=4x-28$
$\text{substitute}\ (2;\ r)\to x=2;\ y=r\\\\r=4\cdot2-28=8-28=-20$

Answer: r = -20

7 0

4 years ago

I WILL MARK BRAINLIEST PLEASE HELP FIND ANGLE DEB ITS DUE AT 12 PLEASE HELP PLEASE

Gemiola [76]

Answer:

$\boxed {\boxed {\sf \angle DEB = 111 \textdegree}}$

Step-by-step explanation:

We want to find angle DEB. We know AB is perpendicular to AC, CD is congruent to CE and angle B is 48 degrees.

ABC is a triangle. The angles in a triangle must add up to 180 degrees. Therefore:

∠A+∠B+∠C= 180°

We know two angles: ∠B= 48° and ∠A= 90° (the little square denotes a right angle).

90°+48°+ ∠C= 180° Substitute values in.

138°+ ∠C =180° Add
138°-138° ∠C= 180°-138° Subtract 138 from both sides.
∠C= 42°

Note that angle C is part of another triangle. It is isosceles because the two legs (CD and CE) are congruent. Therefore, the two base angles (E and D) are congruent.

∠C+∠D+∠E= 180°
∠C+ 2∠D= 180° Angles D and E are congruent
42°+ 2∠D= 180° Substitute 42 in for angle C
42°-42° +2∠D= 180°-42° Subtract 42 from both sides.
2∠D= 138°
2∠D/2= 138°/2 Divide both sides by 2.
∠D= 69°

∠D and ∠E equal 69 degrees.

Angle CED (∠E) and DEB are on a straight line together. Therefore, they are supplementary and equal 180 degrees.

∠CED+ ∠DEB= 180
69° +∠DEB= 180° Substitute 69 for angle CED
69°-69° +∠DEB= 180°-69° Subtract 69 from both sides
∠DEB=111°

Angle DEB is equal to 111 degrees

8 0

3 years ago