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2 years ago

(8a+5B-3)+3(b-3) what is that

Mathematics

2 answers:

alisha [4.7K]2 years ago

8 0

(8a + 5b - 3) +3 (b-3)

8a + 5b - 3 + 3b - 9 : The first parenthesis can be taken out and the second pair of parenthesis will have distributive property done to it.

8a + 8b - 12 : Simplify.

frutty [35]2 years ago

7 0

Answer:

Im Not really sure but i think its

8a+8b-12.

Step-by-step explanation:

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Helen goes into a shop.

Tomtit [17]

Answer:

yes

Step-by-step explanation:

2*24.50=49 (two shirts)

18.90 (pair of shorts)

49+18.90=67.90

she can spend 70, means she can buy all of those and she still has 2.10

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2 years ago

Circle Q is centered at the origin with radius r. Point P(x, y) lies on circle Q. Make a conjecture. How can you find an equatio

salantis [7]

Answer:

The relation $x^{2} +y^{2} =r^{2}$ is explained below.

Step-by-step explanation:

P(x, y) is a point on the circle. Q is the origin. Join PQ.

PQ is the radius.

Therefore, PQ = r

Draw PS perpendicular to the x-axis.

Now, ΔPQS is a right triangle.

By Pythagoros theorem,

$PQ^{2}=PS^{2} +QS^{2}$

$r^{2}=x^{2} +y^{2}$

$x^{2} +y^{2} =r^{2}$

5 0

3 years ago

Read 2 more answers

What is the measure of arc WXY

bonufazy [111]

Answer:

152°

Step-by-step explanation:

Let P be any point on tangent $\overleftrightarrow{YZ}$ and WY is secant or chord of the $\odot J$ .

$\therefore m\angle WYZ + m\angle WYP = 180°\\(Straight \: line \: \angle 's) \\\therefore 104° + m\angle WYP = 180°\\\therefore m\angle WYP = 180°- 104° \\\red{\boxed {\bold {\therefore m\angle WYP = 76°}}} \\$

NOW, by tangent secant theorem:

$m\angle WYP =\frac{1}{2}\times m(\widehat{WXY}) \\\\76°=\frac{1}{2}\times m( \widehat{WXY}) \\\\76°\times 2 =m( \widehat{WXY}) \\\huge \purple {\boxed {\therefore m(\widehat{WXY}) = 152°}}$

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2 years ago

Solve -5(8 – 0.5x) = -2(3 – 0.4x) HELP ASAP

svetlana [45]

Answer:

Step-by-step explanation:

if you want a explanation ask for it :)

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2 years ago

Find the surface area of a cylinder with the following dimensions. Use 3. 14 for $. Round your answer to the nearest

kupik [55]

Answer:

Step-by-step explanation:

r=d/2=11.4/2=5.7

slant surface area=2πr*h=11.4×3.14×4.4=157.5024 cm^2

area of base and top=2(πr²)=2×3.14×(5.7)²=204.0372 cm²

total surface area=157.5024+204.0372=361.5396=361.5 sq. cm

7 0

2 years ago