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3 years ago

The options are: A. X=24.87 B. X=16/7 C. X=16 D. X=59

Mathematics

2 answers:

Orlov [11]3 years ago

8 0

Answer:

A. and D.

Step-by-step explanation:

Akimi4 [234]3 years ago

7 0

Go with B???? lol what level of school is this

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o-na [289]

3x+4y=9
-4y -4y

3x=-4y+9
/3 /3
x = -4/3y+3
X-intercept =3

4 0

3 years ago

GIVING BRANIEST FOR #5

Flura [38]

Answer:

we need to see the other page or we cant solve it

Step-by-step explanation:

6 0

3 years ago

HELP. there are 45 coins consisting of nickels, dimes and quarter making a total of 7 dollars. the number of dimes exceeds the n

MA_775_DIABLO [31]

9514 1404 393

Answer:

Step-by-step explanation:

Let n, d, q represent the numbers of nickels, dimes, and quarters, respectively. Then we have ...

n + d + q = 45

5n +10d +25q = 700

n -d = -5

Using n=d -5, we can substitute into the first two equations:

(d -5) +d + q = 45

2d +q = 50 . . . . add 5, collect terms [eq4]

5(d -5) +10d +25q = 700

15d +25q = 725 . . . . . . . . . . add 25, collect terms [eq5]

Multiplying [eq4] equation by 3 and subtracting that from 2/5 of [eq5], we have ...

(2/5)(15d +25q) -3(2d +q) = (2/5)(725) -3(50)

6d +10q -6d -3q = 290 -150

7q = 140 . . . . . . simplify

q = 20 . . . . . . . . divide by 7

There are 20 quarters.

8 0

3 years ago

13. Solve 5x² - 6x + 1 = 0 using the quadratic formula.<br><br><br> please help me and show work

yaroslaw [1]

Answer: x= 1, $\frac{1}{5\\}$

Step-by-step explanation:

The quadratic equation is

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

and

$x=\frac{-b-\sqrt{b^{2}-4ac } }{2a}$

So we just need to sub in the proper numbers from the equation given, in this case, it would result in

$x=\frac{6+\sqrt{(-6)^{2}-4(5)(1) } }{2(5)}$

and

$x=\frac{6-\sqrt{(-6)^{2}-4(5)(1) } }{2(5)}$

Once we get this we can either manually simplify or use a calculator, using a calculator would result in the answers

x= 1, $\frac{1}{5\\}$

7 0

3 years ago

Which is equivalent to 4(x + 7)?

sveticcg [70]

Simple....

you have: 4(x+7)

To simplify it..distribute..

4(x+7)

4*x=4x
and
4*7=28

Leaving you with...

4x+28

As we can see B is 4x+28

Thus, your answer.

7 0

3 years ago

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