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Shtirlitz [24]
2 years ago
15

Can someone tell me the two answers Plz I’ll mark brainlist and points

Mathematics
1 answer:
Illusion [34]2 years ago
8 0

Answer:

21.

a) don't color the straps green

b) color the straps black

19.

a) color the shapes black

b) don't color the shapes brown

Step-by-step explanation:

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What is 3/4 x 2/3?<br><br><br> Pls help!!!!!!
inysia [295]

Answer:

1/2

Step-by-step explanation:

3/4 × 2/3

3 × 2/4 × 3

6/12 = 1/2

Thus, 3/4 × 2/3 = 1/2

-TheUnknownScientist

7 0
2 years ago
Read 2 more answers
What is the surface area of this right prism?<br><br> Enter your answer in the box.<br><br> cm²
fomenos

Answer:

<h2>the answer is</h2><h2>166 cm²</h2>

Step-by-step explanation:

we know that

surface area of the prism=2*area of the base+perimeter of the base*height

step 1

find the area of the base

area of the base=length* width

length=5 cm

width=4 cm

area of the base=5*4-----> 20 cm²

step 2

find the perimeter of the base

perimeter=2*[length+width]-----> 2*[5+4]----> 18 cm

step 3

height=7 cm

step 4

find the surface area

surface area of the prism=2*area of the base+perimeter of the base*height

surface area of the prism=2*20+18*7----> 166 cm²

7 0
1 year ago
Determine whether the polynomial is a difference of squares and if it is, factor it. y^2 – 196
Lena [83]
Yes....(y-14)(y+14).....................
8 0
3 years ago
Use the formula for the cosine of the difference of two angles to find the exact value of the following expression.
Zolol [24]

Answer:

Exact value of Cos(45° - 60°) is 0.96 using difference of two angles.

Step-by-step explanation:

Given:

Cos(45° - 60°)

We have to apply the formula of cosine for difference of the two angles.

Formula:

cos(a-b)=cos(a)\ cos(b)+sin(a)\ sin(b)

Plugging the values.

⇒ cos(45-60)=cos(45)\ cos(60) + sin(45)\ sin(60)

We know that the values :

sin(45) =cos(45) = \frac{1}{\sqrt{2} }

sin(60)=\frac{\sqrt{3} }{2}  and  cos(60)=\frac{1}{2}

So,

⇒ cos(45-60)=(\frac{1}{\sqrt{2} } \times \frac{1}{2} ) + (\frac{1}{\sqrt{2} } \times \frac{\sqrt{3} }{2})

⇒ cos(45-60)=(\frac{1}{2\sqrt{2} }  + \frac{\sqrt{3} }{2\sqrt{2} })

⇒ cos(45-60)=(\frac{1+\sqrt{3} }{2\sqrt{2} } )

⇒ cos(45-60)=(\frac{1+\sqrt{3} }{2\sqrt{2} } )\times \frac{2\sqrt{2} }{2\sqrt{2} }  ...<em>rationalizing </em>

⇒ cos(45-60)=\frac{2\sqrt{2} +2\sqrt{6} }{ 8}

⇒ cos(45-60)=\frac{2(\sqrt{2}+\sqrt{6})}{8}       ...<em>taking 2 as a common factor</em>

<em>⇒ </em>cos(45-60)=\frac{(\sqrt{2}+\sqrt{6})}{4}

To find the exact values we have to put the values of sq-rt .

As<em>, </em>\sqrt{2}=1.41     and   \sqrt{6} =2.44

Then

<em>⇒ </em>cos(45-60)=\frac{( 1.41+2.44)}{4}<em />

<em>⇒ </em>cos(45-60)=\frac{( 3.85)}{4}<em />

⇒ cos(45-60)=0.96

So the exact value of Cos(45° - 60°) is 0.96 using difference of two angles.

3 0
3 years ago
I need help, quick, it's Algebra but super easy, thank you.
horsena [70]
16 - 2(2w + 1) = 8w - 2(8+w)
     16 - 4w - 2 = 8w - 16 - 2w
       - 4w + 14 = 6w - 16
                  14 = 10w - 16
                  30 = 10w
                  /10    /10
                     3 = w

I think so lol
3 0
3 years ago
Read 2 more answers
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