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2 years ago

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! EXTRA POINTS DONT SKIP:((

Mathematics

1 answer:

Helga [31]2 years ago

8 0

Answer:

Step-by-step explanation:

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45% of c is 90. Find the value of c.

alisha [4.7K]

Answer:

200 = c

Step-by-step explanation:

100/45=2.2.

2.2x90= 200.

4 0

2 years ago

What is the graph of the equation 4x-5y=15

pantera1 [17]

Hello James!

Graph using the slope and y - intercept.
Slope: $\frac{4}{5}$
Y-intercept: -3

The graph looks like this ↓↓↓

6 0

3 years ago

Read 2 more answers

Write a quadratic equation given the roots -1/3 and 5, show your work

Travka [436]

$\boxed{(x - a)(x - b) = 0}$

The equation above is the intercept form. Both a-term and b-term are the roots of equation.

$x = - \frac{1}{3} \\ x = 5$

These are the roots of equation. Therefore we substitute a = - 1/3 and b = 5 in the equation.

$(x + \frac{1}{3} )(x - 5) = 0$

Here we can convert the expression x+1/3 to this.

$x + \frac{1}{3} = 0 \\ 3x + 1 = 0$

Rewrite the equation.

$(3x + 1)(x - 5) = 0$

Simplify by multiplying both expressions.

$3 {x}^{2} - 15x + x - 5 = 0 \\ 3 {x}^{2} - 14x - 5 = 0$

Answer Check

Substitute the given roots in the equation.

$3 {(5)}^{2} - 14(5) - 5 = 0 \\ 75 - 70 - 5 = 0 \\ 75 - 75 = 0 \\ 0 = 0$

$3( - \frac{1}{3} )^{2} - 14( - \frac{1}{3}) - 5 = 0 \\ 3( \frac{1}{9} ) + \frac{14}{3} - 5 = 0 \\ \frac{1}{3} + \frac{14}{3} - \frac{15}{3} = 0 \\ \frac{15}{3} - \frac{15}{3} = 0 \\ 0 = 0$

The equation is true for both roots.

Answer

$\large \boxed {3 {x}^{2} - 14x - 5 = 0}$

8 0

2 years ago

Each batch of granola Lena makes uses 3 cups of oats, 1 cup of raisins, and 2 cups of nuts. Lena wants to make 4 batches of gran

pogonyaev

Answer:

12 cups oats, 4 cups raisins, 8 cups nuts

Step-by-step explanation:

For this problem, just multiply each ingredient by 4

4 0

3 years ago

Read 2 more answers

Mrs.cyan paid $105 for flower boxes. each flower box cost $7. how many flowers did she buy

Ede4ka [16]

Answer:

Step-by-step explanation:

To find how many she bought, we have to divide. So we do 105/7=15.

8 0

1 year ago

Read 2 more answers

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((

PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! EXTRA POINTS DONT SKIP:((