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3 years ago

She wants to save 3/5 of 180.00 and spend the rest hpw much would she have left

2 answers:

8 0

In this case, we must figure out what 1/5 of $180 is. To solve this, you must divide 180 by 5. 180 / 5 = 36. However, the fraction amount of what she wants to save is 3/5. This means we multiply 36 by 3. 36 x 3 = 108. This means she will save $108 and spend $72 dollars.

Anastasy [175]3 years ago

6 0

3/5 of 180 is 108
180-108=72
she would have 72$ left

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In circle C, r = 32 units.

vlabodo [156]

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3 years ago

4x^2+2xy-10y^2+9=0 what is the value of a,b,c and the discriminant?

zavuch27 [327]

basically you treat y like a number and not a variable

Answer:

a is 4

b is 2y

c is -10y²+9

discriminant is 4(41y²-36)

Step-by-step explanation:

4x²+2xy-10y²+9=0

rewrite in standard form of a quadratic equation like ax² + bx + c = 0

4x²+2yx-10y²+9=0

basically you treat y like a number and not a variable

a is the number with the x²

right away we know a is 4 because of 4x²

b is the one with x so in this formula b is 2y

c is the number without the x which in this case is -10y²+9

discriminant is

b² - 4ac

(2y)²- (4)(4)(-10y²+9)

4y²-(16)(-10y²+9)

4y²+160y²-144

164y²-144 =

4(41y²-36)

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2 years ago

Write an inequality to represent the following statement.

harina [27]

X<2.5

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3 years ago

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2 years ago

Which is the value of this expression when a=5 and k=-2

Zinaida [17]

Answer:

Option C is correct.

Step-by-step explanation:

We are given the expression:

$(\frac{3^2a^{-2}}{3a^{-1}})^k$

The value of a =5 and k = -2

Putting the values and solving

$=(\frac{3^2*5^{-2}}{3*5^{-1}})^-2\\=(\frac{3^{2-1}}{5^{-1+2}})^-2\\=(\frac{3^{1}}{5^{1}})^-2\\\\=(\frac{3}{5})^-2\\if \,\,a^{-1} \,\,then\,\, 1/a\\=\frac{(3)^{-2}}{(5)^{-2}}\\ Can\,\,be\,\,written\,\,as\\\\=\frac{(5)^{2}}{(3)^{2}} \\=\frac{25}{9}$

Option C is correct.

3 0

3 years ago