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3 years ago

A pair of angles measure 45° and 45°. Select ALL the types of angle pairs that they can be.

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

6 0

Step-by-step explanation:

b Supplementary Angles

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Sketch the graph of y = negative 2 x squared + x + 1 using your graphing calculator. What are the x-intercepts of this graph? a.

lions [1.4K]

The x-intercept is (1, 0) and (-0.5, 0).

The correct option is (a)

<h3>What is intercept?</h3>

The x-intercept is the point where a line crosses the x-axis, and the y-intercept is the point where a line crosses the y-axis.

Given function is:

f(x)= $-2x^{2}+x+1$

So, The graph of this equation is attaches below.

The x- intercepts of this graph

$\mathrm{X\:Intercepts}:\:\left(-\frac{1}{2},\:0\right),\:\left(1,\:0\right)$

X intercepts: (1, 0) and (-0.5, 0)

Hence, the x-intercept is (1, 0) and (-0.5, 0).

Learn more about intercept here:

brainly.com/question/14180189

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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

4 years ago

The first 5 numbers of a sequence are shown below. Which of the following functions produces the sequence with n: (1, 2, ...,

Rasek [7]

Answer:

Step-by-step explanation:

f(n) = 26 + 9(n-1)

4 0

3 years ago

Suppose

Marrrta [24]

F(3) = t4(3) = 2

The value of the function at the point of expansion is the first (constant) term of the Taylor series.

6 0

3 years ago

The B737-400 aircraft costs $2948 dollars per hour to operate. The algebraic expression 2948t gives the total cost to operate th

Umnica [9.8K]

Answer:

The required cost is $10,612.8

Step-by-step explanation:

Find the value at t = 3.6:

2948t, t=3,6

Substitute t=3,6

Multiply 2948x3,6

Solution = 10612,8

3 0

2 years ago