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2 years ago

Mateo’s aunt bought a share of stock many years ago.

Mathematics

2 answers:

Usimov [2.4K]2 years ago

8 0

Answer:

150

Step-by-step explanation:

150 plus 80% equals 270

777dan777 [17]2 years ago

6 0

Answer:

Step-by-step explanation:

180%=270

divide by 9

20%=30

x by 5

100% =300

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Ed is on a road trip. He has already traveled 211 miles and is driving at a rate of 63 miles per hour. Which equation could be u

Marina86 [1]

Answer:

Option C is correct.

Step-by-step explanation:

Distance already traveled by Ed $=211$ miles

Also, Ed is driving at a rate of 63 miles per hour.

Distance $=$ Speed × Time

Distance traveled by Ed in $x$ hours $=63x$

Total distance traveled by Ed $=211+63x$

Also, total distance traveled by Ed is $638$ miles.

Therefore,

$638=211+63x$

Option C is correct.

6 0

3 years ago

If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?

Dovator [93]

Keywords

quadratic equation, discriminant, complex roots, real roots

we know that

The formula to calculate the roots of the quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}}{2a}$

where

The discriminant of the quadratic equation is equal to

$b^{2}-4ac$

if $(b^{2}-4ac)> 0$ ----> the quadratic equation has two real roots

if $(b^{2}-4ac)=0$ ----> the quadratic equation has one real root

if $(b^{2}-4ac)< 0$ ----> the quadratic equation has two complex roots

in this problem we have that

the discriminant is equal to $-8$

the quadratic equation has two complex roots

therefore

the answer is the option A

There are two complex roots

5 0

3 years ago

Read 2 more answers

Which equation represents the hyperbola in general form?

valina [46]

ANSWER

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

EXPLANATION

The standard equation of the hyperbola is

$\frac{ {(y - 2)}^{2} }{4} - \frac{ {(x - 2)}^{2} }{9} = 1$

We multiply through by 36 to obtain:

$9 {(y - 2)}^{2} - 4( {x - 2)}^{2} = 36$

We now expand to get,

$9( {y}^{2} - 4y + 4) - 4( {x}^{2} - 4x + 4) = 36$

Expand :

$9 {y}^{2} - 36y + 36 - 4 {x}^{2} + 16x - 16 = 36$

To get the general form, we equate everything to zero to get,

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

The correct choice is D.

7 0

3 years ago

Oliver purchased 11.3 gallons of gasoline. There are approximately 3.8 liters

m_a_m_a [10]

Answer:b

Step-by-step explanation:

3 0

3 years ago

Suppose the contestants were asked to make two batches of their recipes instead of one batch. Would the value for the amount of

kirill [66]

Answer:

yes

Step-by-step explanation:

If all contributors to the distribution are doubled, the value of any particular item in the distribution will be double what it was. That is, it will be different.

4 0

2 years ago