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Savatey [412]
3 years ago
7

How old am I if 400 reduced by 2 times my age is 244 now PLEASE HELP!!!! 12 points!!

Mathematics
2 answers:
Volgvan3 years ago
8 0
X= your age 400-2x=244 -2x=-156 x=78 you are 78 years old
lubasha [3.4K]3 years ago
3 0
400-2x=244 -2x=244-400 -2x=-156 -x=-156/2 -x=-78 x=78
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#4 need help with this one
4vir4ik [10]

Answer:

x = 25.6

Step-by-step explanation:

As we can see, this is a right triangle, so there are known relationships

well to start we have to know the relationship between angles, legs and the hypotenuse

α = 43

a: adjacent  = x

o: opposite

h: hypotenuse  = 35

sin α = o/h

cos α = a/h

tan α = o/a

we see that it has (angle, adjacent, hypotenuse)

cos α = a/h

cos 43° = x / 35

cos 43° * 35 = x

25.59 = x

if we want to round to the nearest tenth

x = 25.59 = 25.6

4 0
3 years ago
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During an April rainstorm, it rained for six straight days. The amount of rainfall for each day was 0.8 inch, 2.15 inches, 2 inc
Andrei [34K]

Answer:

6.12 inches

Step-by-step explanation:


4 0
3 years ago
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Solve a Quadratic EquationUse the following equation to answer the questions:3x2 - 8x + 1 = 314 1 pointWhat is the discriminant?
emmainna [20.7K]

Δ=88

1) Using the Quadratic Equation to Solve

3x²-8x+1=3

3x²-8x+1-3=3-3

3x² -8x -2=0

2)Let's find the discriminant

Δ= (-8)²-4(3)(-2)

Δ=64 -4(3)(-2)

Δ=88

8 0
1 year ago
How do you Graph y=-3/5x+6
dangina [55]
Let's pick two points on the line, the y-intercept, and the x-intercept. These are the points at which x=0, and y=0.

When x=0:
y=-3/5x+6
\\y=-3/5(0)+6
\\y=6

So one point is (0,6)

When y=0:
y=-3/5x+6
\\0=-3/5x+6
\\-6=-3/5x
\\-30=-3x
\\x=10

So another point is (10,0)

So mark the points (0,6) and (10,0) on a pair of axes, and draw a straight line between them, and past them to infinity. This is a graphing of the line y=-3/5 x + 6



4 0
3 years ago
The line graph shows the average number of awakenings during the night for men and women of different ages. Use the graph to est
Reika [66]

*see attachment showing the line graph

Answer:

2

Step-by-step explanation:

The red line represents the line for women, while the blue line represents the line for men.

Age 45 is the middle of 40 and 45 on the x-axis.

The average number of awakenings during the night for 45 ​-year-old men ≈ 5

The average number of awakenings during the night for 45 ​-year-old women = 3

The difference = 5 - 3 = 2 times during the night.

6 0
3 years ago
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