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3 years ago

Help plz!

Mathematics

1 answer:

sattari [20]3 years ago

7 0

Answer:

Step-by-step explanation:

Corresponding angles form a sideways U when you connect the angles.

b is the only one that does that.

1 and 4 are consecutive angles.

1 and 3 are vertical angles

4 and 3 are linear pair angles.

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13. Solve for s. 2(s + 7) = 12

Tatiana [17]

2s+14=12
2s=-14+12
2s=-2
s=-2÷2
s=-1

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3 years ago

Read 2 more answers

What is this? Please help

larisa [96]

Answer:

y=-34

Step-by-step explanation:

-51÷3=-17

-17×2=-34

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2 years ago

Determine the angle at the centre of a circle with radius 12.0 cm for an arc length of of 21.0 cm.

nata0808 [166]

Answer:

$\theta=\dfrac{7}{4}\ \text{radian}$

Step-by-step explanation:

We have,

Radius of the circle is 12 cm

Arc length, l = 21 cm

It is required to find the central angle of the circle. The formula for the length of an arc of a circle is :

$l=r\times \theta$

$\theta$ is central angle

$\theta=\dfrac{l}{r}\\\\\theta=\dfrac{21}{12}\\\\\theta=\dfrac{7}{4}\ \text{radian}$

So, the angle at the centre of the circle is $\dfrac{7}{4}\ \text{radian}$ .

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3 years ago

X2 + 4x - 21 = 0 quadratic formula

Elena-2011 [213]

Answer:

Step-by-step explanation:

x2 +4x-21=0. solve for x

$x = \frac{7}{2}$

$x = 3 \frac{1}{2} \ x = 3.5$

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3 years ago

What does 3(1+x)-5=3x-2 equal ?

lesantik [10]

Answer:

Step-by-step explanation:

Theres different ways you can solve this but the way I did it both sides were equal to eachother.

4 0

3 years ago