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3 years ago

Solve for y. show work. answer may be left as decimal. 0.4(y+10)+0.6y=2

Mathematics

2 answers:

anygoal [31]3 years ago

8 0

Answer

-20

Step-by-step explanation:

0.4y + 0.06y = 0.10y

0.4 x 10 = 4

0.10y + 4 = 2

-4 -4

0.10y/0.10 = -2/ 0.10 = -20

maxonik [38]3 years ago

4 0

Answer: y=2

Step-by-step explanation:

combine like terms 2+ -4 = .2 1y= -2

divide each side my 1 then simplifying y=2

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Let g(x) = 2x and h(x) = x^2 + 4. Find the value.(g o h) (0)a) 4b) 8c) 0d) 16

Paul [167]

$\begin{gathered} \text{Given} \\ g(x)=2x \\ h(x)=x^2+4 \end{gathered}$

Solve for (g o h)(x)

$\begin{gathered} (g\circ f)(x)=g\big(f(x)\big) \\ (g\circ f)(x)=g(x^2+4) \\ (g\circ f)(x)=2(x^2+4) \\ (g\circ f)(x)=2x^2+8 \end{gathered}$

Next substitute x = 0

$\begin{gathered} (g\circ f)(x)=2x^2+8 \\ (g\circ f)(0)=2(0)^2+8 \\ (g\circ f)(0)=8 \end{gathered}$ $\text{Therefore, }(g\circ f)(0)=8$

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2 years ago

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Irina18 [472]

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3 years ago

If a yard of fabric cost $12.99 then how much will 2 feet cost

Ratling [72]

We know that 1 ft= 1/3 yd.

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3 years ago

Can someone help me with these two problems please!!!!!

forsale [732]

Answer:

The question at the top is:

Factor

x 2 + 2 x − 63

using the AC method.

( x − 7 ) ( x + 9)

WHICH THE ANSWER IS (B)

The question at the bottom is:

Factor

x 2 + 18 x + 80

using the AC method.

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WHICH IS ANSWER (C)

Step-by-step explanation:

Hope this helped! :)

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3 years ago

Given: ΔKLM, KL = LM = 13in, KM = 10in. Find: The area of ΔKLM.

KengaRu [80]

Answer:

$60 in^{2}$

Step-by-step explanation:

We are given a ΔKLM, in which KL=LM=13 in and KM=10 in which means two sides of the given triangle are same and thus is an isosceles triangle.

Its median drawn from L to the KM will be altitude. Therefore, ΔKLN and ΔLMN are right triangles.

In ΔKLN, using the pythagoras property, we have

$13^{2}=5^{2}+LN^{2}$

$169-25=LN^{2}$

$\sqrt{144} =LN$

$12=LN$

Now, Area of triangle= 1/2×base×height

=1/2×10×12

=60 squared inches.

4 0

3 years ago