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3 years ago

Where is the answer to the expression 4 − 8 located on a horizontal number line?

Mathematics

1 answer:

alexandr402 [8]3 years ago

8 0

At the point -4

Since 4-8 = -4

Hope this helps!

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The number that is 10 less than 6

almond37 [142]

The number (x) that is (=) 10 less than (-) 6

x = 6 - 10 Subtract
x = -4

6 0

3 years ago

Draw to explain how you would make a ten to find 5+8.

erica [24]

Since 2+8 =10 you would just have 3 left to add so it would be 10+3=13

4 0

3 years ago

Using addition formula solve tan 15

salantis [7]

Answer:

2 - $\sqrt{3}$

Step-by-step explanation:

Using the addition formula for tangent

tan(A - B) = $\frac{tanA-tanB}{1+tanAtanB}$ and the exact values

tan45° = 1 , tan60° = $\sqrt{3}$ , then

tan15° = tan(60 - 45)°

tan(60 - 45)°

= $\frac{tan60-tan45}{1+tan60tan45}$

= $\frac{\sqrt{3}-1 }{1+\sqrt{3} }$

Rationalise the denominator by multiplying numerator/ denominator by the conjugate of the denominator.

The conjugate of 1 + $\sqrt{3}$ is 1 - $\sqrt{3}$

= $\frac{(\sqrt{3}-1)(1-\sqrt{3}) }{(1+\sqrt{3})(1-\sqrt{3}) }$ ← expand numerator/denominator using FOIL

= $\frac{\sqrt{3}-3-1+\sqrt{3} }{1-3}$

= $\frac{-4+2\sqrt{3} }{-2}$

= $\frac{-4}{-2}$ + $\frac{2\sqrt{3} }{-2}$

= 2 - $\sqrt{3}$

3 0

3 years ago

I am having a test tomorrow about this can someone help me explain it?

Amiraneli [1.4K]

Answer:

the answer would be 217 [degrees]

Step-by-step explanation:

Since m<1 and m<2 are next to each other, they are adjacent. Adjacent angles must share a common side which is m<W. This means they have to be added. m<1+m<2= m<XYZ

145+72=217

7 0

3 years ago

Read 2 more answers

Solve−4 1/3÷−2 3/5 a 1 2/3 b 1 4/5 c 2 1/5 d 2 3/5

grin007 [14]

A 1 2/3
-4 1/3 / -2 3/5=1.6666=1 2/3

5 0

3 years ago