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3 years ago

13

How many ounces of a silver alloy that cost $4 an ounce must be mixed with 10oz of an alloy that costs $6 an ounce to make a mix

ture that costs $4.32 an ounce

1 answer:

scoray [572]3 years ago

5 0

Answer:

x = 52.5

Step-by-step explanation:

4x + 6(10) = 4.32(x + 10)

4x + 60 = 4.32x + 43.20

0.32x = 16.8

x= 52.5

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How can you determine if a relation is a function?

Kobotan [32]

Each input should only have 1 output. Multiple inputs can have the same output, but one input can only correspond to a single output.

Also, if you graph the relation with the input as the x coordinate and output as the y coordinate, you can then conduct a verical line test. Anywhere you draw a vertical line, you should only intersect the curve one time.

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3 years ago

Use the figure below for Exercises 1-8. Note that RN pierces the plane at N. It is not coplanar with V.

Serga [27]

Answer:

1. Two segments are MC and AX

2. Point N

3. Three collinear points are points A, point N and point X

4. Two other names for V are quadrilateral and rectangle

5. No N, M, and X are in a different plane from R

6. Two rays are ray NR and ray NA

7. The pair of opposite rays with end point N are ray NA and ray NX and ray NM and ray NC

8. Three lines are shown in the figure

Step-by-step explanation:

1) A segment is a line portion with two end points

2) A point marks a position

3) Collinear points are points on the same line

3) A quadrilateral is a four sided figure while rectangle has 90° interior angles

4) A ray is an line extending from a point without ending

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6) A line is a straight one dimensional geometric figure that has no width but infinite number of points extending without end in both directions

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3 years ago

Evaluate the algebraic expression.<br> z^2+1+y when y=4, and z=3.

Luden [163]

Answer:

your question is

z²+1+y where, y=4,z=3

3²+1+4

9+5

14

is your answer

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2 years ago

POSSIBLE POINTS 10

Blizzard [7]

Answer: 2 hours

Step-by-step explanation:

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3 years ago

Suppose that you earned a bachelor's degree and now you're teaching high school. The school district offers teachers the oppor

harkovskaia [24]

Answer:

A ) The Amount which will be saved after five years is $ 5742.4

B ) The compound Interest is $ 1742.4

Step-by-step explanation:

The Principal deposited at the end of each year = $ 4000

The rate of interest = 7.5 % compounded annually

The time period = 5 years

From compounded method :

Amount = principal × $(1+\dfrac{\textrm rate}{100})^{\textrm time}$

or, Amount = $ 4000 × $(1+\dfrac{\textrm 7.5}{100})^{\textrm 5}$

Or, Amount = $ 4000 × $(1.0075)^{5}$

or, Amount = $ 4000 × 1.4356

∴ Amount = $ 5742.4

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B ) The compound Interest = Amount - principal

Or, C I = $ 5742.4 - $ 4000 is $ 1742.4 Answer

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3 years ago