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4 years ago

I need help please with this

Mathematics

1 answer:

tester [92]4 years ago

8 0

1. 16
2. 12.6
3. 3
4. 20
5. 3
6. 6.8
7. 7.8
8. 12.

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What is the value of the expression below when w=3? 5w2 -5w-8

IrinaK [193]

Answer:

Step-by-step explanation:

Well substitute (if there is no sign and their all stocked together, it’s multiplication)

5(3)2 - 5(3)-8

30-7

7 0

3 years ago

What is the proportion of 14/36 = 7/x . i need the answer quickly please

matrenka [14]

Answer:

x = 18

Step-by-step explanation:

The scale factor between the two numerators are 1/2.

Scale factor

= numeratorANS / numeratorKNOWN

= 7/14

= 1/2

Multiply the denominator by the scale factor to find x.

x = 36 * 1/2

x = 18

3 0

3 years ago

Step 3: Let LM = x. We know the lengths of the radii of each circle, so KL = 12 +

kow [346]

Answer:

Step-by-step explanation:

Step 3:

Let LM = x

OK = KP = 12 units [Radii of circle K]

LN = LP = 8 units [Radii of circle L]

Therefore, KL = KP + PL

KL = 12 + 8

= 20 units

Step 4:

Since, ΔKOM and ΔLNM are the similar triangles,

By the property of two similar triangles, corresponding sides of these similar triangles will be proportional.

$\frac{OK}{NL}=\frac{KM}{LM}$

$\frac{12}{8}=\frac{x+20}{x}$

12x = 8(x + 20) [By cross multiplication]

12x = 8x + 160

12x - 8x = 160

4x = 160

x = 40

3 0

3 years ago

X^2-12x+9=y standard to vertex form

stich3 [128]

Answer:

(-6, -45)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is cos^{-1} (0.393) [/tex]

alexgriva [62]

Acos(0.393)=66.85˚
Use $cos^{-1} (0.393)$ to solve

4 0

3 years ago