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4 years ago

Subtract 9.5 − 1.76 =

Mathematics

1 answer:

stepan [7]4 years ago

6 0

Answer:

The value would be 7.74

Step-by-step explanation:

When subtracting amounts like this, make sure you line up the decimal places.

9.5

-1.76

-------

7.74

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What is 5/7*w=40 1/2

sukhopar [10]

Answer:

56 7/10

Step-by-step explanation:

convert 40 1/2 to a fraction 40 1/2 = 81/2

multiply both sides by 7/5

this gets w by itself on the left

81/2 x 7/5 = 567/10 = 56 7/10

7 0

3 years ago

determining the number of roots of the equation 8x^3+12x^2-50x+135=0 and find also the interval(s) that isolate the roots.Are th

professor190 [17]

Answer:

one negative real root in [-5, -4]; two complex roots
the complex roots cannot be isolated in the same way.

Step-by-step explanation:

A graphing calculator is a wonderful tool for this. It shows the one real root to be near -4.062, so between -5 and -4.

The value of the cubic at x = -5 is -315; at -4 it is +15, so the root is definitely between those values.

The one real root is isolated to being between (-5, -315) and (-4, 15). The complex roots are not isolated.

3 0

3 years ago

A rectangle with sides 12 cm and 14 cm has the same diagonal as a square.

adelina 88 [10]

Answer:

Length of side of square $=\sqrt{170}$

Step-by-step explanation:

Sides of rectangle $=12,14\ cm$

let $x$ be diagonal of rectangle

<u><em>Pythagorean theorem : The square of hypotenuse is equal to sum of square of sides.</em></u>

Here hypotenuse $=x$

$x^{2} =12^{2}+14^{2}\\x^{2} =144+196\\x^{2} =340\\x=\sqrt{340}$

Diagonal of square $=\sqrt{340}$

let side of square $=a$

again use pythagorean theorem

$340=a^{2}+a^{a}\\2a^{2}=340\\a^{2}=170\\a=\sqrt{170}$

8 0

3 years ago

Identify the domain and range of the function. Enter your answers as numbers in the boxes; do not include units. Enter the range

Dmitrij [34]

Answer:

When we have a function y = f(x)

The set of the possible values of x is called the domain, and the set of the possible values of y is called the range.

In this case, we have:

x = age, and y = price.

x y

< 5 $0

5 - 17 $25

18 - 64 $40

≥ 65 $35

Then the range is the possible age of the customer, and it goes for all the possible ages (as whole numbers)

So the domain will be the set of all the positive integers:

D = {1, 2, 3, 4, 5, ...}

(of course, we can not have an age equal to 1300 or infinity, but we really can not cap the domain)

The range is the possible values of y, in this case is discrete, because we have only 4 possible prices, so the range is:

R = {$0, $25, $40, $35}

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3 years ago

Which linear equation has a slope of 3 and a y-intercept of –2?

nordsb [41]

$The\ slope-intercept\ form:y=mx+b\\\\m-the\ slope\\b-y-intercept\\\\m=3;\ b=-2\\\\therefore\\\\\boxed{y=3x-2}$

4 0

3 years ago

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