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2 years ago

Please help click on pictures

Mathematics

1 answer:

shutvik [7]2 years ago

3 0

Answer:

The area of the triangle is 40cm^2

Step-by-step explanation:

Calculate the area of a triangle using the equation: 1/2hb

Look at the attached picture and the equation should make sense.

You can use 8cm and 10cm.

8*10 = 80

1/2(80) = 40

So, the area of the triangle is 40cm^2

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In △ABC, a=31, b=22, and c=18. Identify m∠A rounded to the nearest degree. HELP ME PLEASE!!

4vir4ik [10]

Answer:

The measure of angle A is $101\°$

Step-by-step explanation:

we know that

Applying the law of cosines

$a^{2} =b^{2}+c^{2}-2(b)(c)cos(A)$

substitute the values and solve for cos(A)

$31^{2} =22^{2}+18^{2}-2(22)(18)cos(A)$

$cos(A)=[22^{2}+18^{2}-31^{2}]/(2(22)(18))\\ \\cos(A)=-0.193182\\ \\A=arccos(-0.193182)=101\°$

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3 years ago

Can x3 – 3x + 1 be the quotient on division of x5+ 2x3 + x – 1 by a polynomial in x of degree 3? Justify

mestny [16]

Answer:

Step-by-step explanation:

x⁵ + 2x³ + x - 1 -> degree of the polynomial is 5

So, when x⁵ is divided by x³, the quotient should be x⁵⁻³ = x².

So, x³ - 3x + 1 cannot be a quotient

8 0

2 years ago

help me plz you'll get brainliest if u show work and the only way for u to help me is if u show your work so plz do

Usimov [2.4K]

Answer:

Step-by-step explanation:

This will be D because the beaker already has 0.2 mL of water. If Jovita needs to add more water to the beaker, and<em> then </em>it is 0.8. In D, the diagram shows you 0.2 + x = 0.8, which makes it the right diagram.

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19.97 - 5.97+<br> 2.3 <br> it’s multi step equations

expeople1 [14]

Answer:

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3 years ago

38.07 is 9% of what number?

Nataliya [291]

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2 years ago

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Please help click on pictures ​

Please help click on pictures