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2 years ago

What mathematical strenght and skills did you develop in this lesson

Mathematics

1 answer:

ElenaW [278]2 years ago

6 0

Answer:

I have learned a lot in math, although it was years ago on of my favorite things to learn was to multiply and divide. They were not only easy but also fun.

Step-by-step explanation:

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The diagram shows a right-angled triangle.

Ratling [72]

Where is the diagram?

4 0

2 years ago

High grade steel consists of 85% iron and 15% magnese. Low grade steel consists of 67% iron and 33% mag ese. NASA orders 500 ton

Mamont248 [21]

Answer:

$361\dfrac{1}{9}$ tons of high steel and $138\dfrac{8}{9}$ tons of low steel

Step-by-step explanation:

Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.

In x tons of high grade steel there are

$0.85x$ tons of iron

$0.15x$ tons of magnese

In y tons of low grade steel there are

$0.67y$ tons of iron

$0.33y$ tons of magnese

NASA orders 500 tons of steel, so

$x+y=500$

and specifies that it must be in the proportion 80% iron and 20% magnese, so

$0.85x+0.67y=500\cdot 0.8\\ \\0.85x+0.67y=400$

From the first equation,

$x=500-y$

Substitute it into the second equation:

$0.85(500-y)+0.67y=400\\ \\425-0.85y+0.67y=400\\ \\-0.18y=-25\\ \\y=\dfrac{2,500}{18}=138\dfrac{8}{9}\ tons\\ \\x=361\dfrac{1}{9}\ tons$

7 0

3 years ago

Solve the inequality 3(2x+7)>-3+5x.

lilavasa [31]

Answer:

Check pdf

Step-by-step explanation:

Download pdf

7 0

2 years ago

C/- 4 = 16<br> please help

Yuri [45]

Answer:

c = -64

Explanation:

c/(-4) = 16

multiply the equation by -4,

c/(-4) × (-4) = 16 × (-4)

c = 16 × (-4)

c = -64

7 0

2 years ago

Read 2 more answers

Queston

Maru [420]

Answer:

$60

Step-by-step explanation:

0.80 x 75 = $60

3 0

2 years ago

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What mathematical strenght and skills did you develop in this lesson​

What mathematical strenght and skills did you develop in this lesson