MATHEMATICS HIGH SCHOOL

This is what my techer told me to do "Show a different way to solve 99x76"

Answers

Answer 1

Answer:

Answer:

I think it's 76×99

Step-by-step explanation:

hope it helps

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Can you please help me with this question?

Answers

9514 1404 393

Answer:

240°

Step-by-step explanation:

The sum of angles in a quadrilateral is 360°, so you have ...

a° +b° +60° +60° = 360°

a° +b° = 240° . . . . . . subtract 120° from both sides

Am I correct? Please explain!

Will mark brainliest

Answers

Answer:

nr. 1 and 3 is a Dilation 2 and 4 are not Dilations

Step-by-step explanation:

Dilation is an elnargment or shink of a figure by a x(factor) that makes the SAME image but smaller or larger

Use the method of quadrature to estimate the area under the curve y=-x^2+5 and above the x-axis from x=0 to x=2.

Answers

Answer:

Area = $(22)/(3)$

Step-by-step explanation:

Given is a curve

$y=-x^2+5$

we have to find the area of this curve above x axis from 0 to 2

By method of quadrature we know that area of a curve above x axis is given by,

$\int\limits^a_bf( {x} )\, dx$

Here a= 0 and b =2

Substitute to get

Area = $\int\limits^0_2 {-x^2+5} \, dx \n=(-x^3)/(3) +5x$

Substituting limits

Area = $(-8)/(3) +10 =(22)/(3)$

I'm a calculus teacher at the high school level and I have never heard of quadrature. I teach from an AP approved college-level text so...I'll do it using the antiderivative! Setting that up to integrate we have $- \int\limits^2_0 { (x^2-5)} \, dx$ . If you notice, I pulled the negative out in front of the integral and changed the signs in the function. So it could really be rewritten as $-1 \int\limits^2_0 {(x^2-5)} \, dx$ . Integrating we have $-1[ (x^3)/(3) -5x]$ from 0 to 2. Subbing in those bounds, we have $-1[( (2^3)/(3)-5(2))-( (0^3)/(3)-5(0))]$ which simplifies to $-1( (8)/(3)-10)$ . Distributing the -1 in gives us $10- (8)/(3)= (22)/(3)$

What does the zigzag line in the circuit diagram represent?A. a source of electrical energy

B. an electrical conductor

C. an electrical resistor

D. an open switch

Answers

The zigzag line in the circuit diagram represents C) an electrical resistor.

the zig zags are resistors, the thing on the left is the symbol for a battery. Sometimes a single cell (1.5V); you'd draw a few more plates to show a higher voltage battery. But a DC supply, anyway. The long line is supposed to be the positive terminal.

If h(x) = −4x − 10, find h(−5).

−30
1.25
10
−1

Answers

The value of function h (-5) will be;

⇒ h (-5) = 10

What is substitution method?

To find the value of any one of the variables from one equation in terms of the other variable is called the substitution method.

Given that;

The function is,

⇒ h (x) = - 4x - 10

Now,

Here, The function is,

⇒ h (x) = - 4x - 10

So, To find the value of h (-5) as;

Substitute x = - 5 in above equation as;

⇒ h (x) = - 4x - 10

⇒ h (-5) = - 4 × -5 - 10

⇒ h (-5) = 20 - 10

⇒ h (-5) = 10

Thus, The value of function h (-5) will be;

⇒ h (-5) = 10

Learn more about the substitution method visit:

brainly.com/question/26094713

#SPJ2

$h(x)=-4x-10\n\nh(-5)\to x=-5\n\nsubtitute\ the\ value\ of x=-5\ to\ the\ formula:\n\nh(-5)=-4(-5)-10=20-10=\boxed{10}$

The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 27 inches, how long is each spoke? Round your answer to the nearest hundredth.

Answers

Each spoke is 4.3 inches long.

Since the spoke is from the center of the wheel to its rim, we are looking for the radius of the circle.

Circumference = 2πr
27 = 2(3.14) r
27 = 6.28 r
27/6.28 = 6.28r/6.28
4.30 = r

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