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4 years ago

(-3 squared + 4(-3))(-3)

1 answer:

6 0

⓵

(-3² + 4(-3)) × -3

↓

(-9 + (-12)) × -3

↓

(-9 - 12) × 3

↓

-21 × 3 = -63

→ So the answer is : (-3² + 4(-3)) × -3 = -63

Hope this helped! ☻

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What is the missing constant term in the perfect square that starts with X^2 - 8x

xenn [34]

Answer:

Step-by-step explanation:

Perfect square in the quadratic from ax² + bx + c

You know an equation is perfect when:

2√(ax²)√(c) = bx

Substitute x² for ax² and 8x for bx. Then isolate c by doing the reverse operations.

2√(ax²)√(c) = bx

2√(x²)√(c) = 8x

2x√c = 8x Divide both sides by 2x

√c = 4 Square both sides to isolate c.

c = 16

The missing constant term is 16.

Check answer:

x² - 8x + 16

(x - 4)²

= (x - 4)(x - 4)

= x² - 4x - 4x + 16

= x² - 8x + 16

3 0

3 years ago

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A recipe for pie dough calls for a ratio of butter to flour of 4/5 : 3 1/3 . If you plan to use 6 2/3 cups of flour, how much bu

erma4kov [3.2K]

Answer:

1 3/5

Step-by-step explanation:

to determine the answer, take the following steps :

determine how much larger the amount of flour you intend to use is more than that indicated in the recipe
Multiply the answer gotten in the above step by the amount of flower indicated in the recipe

6 2/3 ÷ 3 1/3

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3 years ago

Can anyone help me with these question

Kazeer [188]

So hmm notice the picture below

a)

the center of the circle is the midpoint of those two folks

$\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ -10}}\quad ,&{{ -2}})\quad 
% (c,d)
&({{ 4}}\quad ,&{{ 6}})
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)
\\\\\\
\left(\cfrac{4-10}{2}\quad ,\quad \cfrac{6-2}{2} \right)\impliedby \textit{center of the circle}$

b)

the diameter is the distance between P and Q, or the length of that segment, and the radius is half the diameter

$\bf \textit{distance between 2 points}\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ -10}}\quad ,&{{ -2}})\quad 
% (c,d)
&({{ 4}}\quad ,&{{ 6}})
\end{array}\quad 
% distance value
d = \sqrt{({{ 4}}-{{ (-10)}})^2 + ({{ 6}}-{{ (-2)}})^2}
\\\\\\
d=\cfrac{\sqrt{(4+10)^2+(6+2)^2}}{2}\impliedby \textit{radius of the circle}$

c)

so, from a), you found the h,k coordinates for the center, from b) you've got the radius

so, just plug them in here then $\bf \textit{equation of a circle}\\\\ 
(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2
\qquad 
\begin{array}{lllll}
center\ (&{{ h}},&{{ k}})\qquad 
radius=&{{ r}}
\end{array}$

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3 years ago

A dressmaker needs to cut 12-inch pieces of ribbon from rolls of ribbon that are 6 feet in length. How many 12-inch pieces can t

IrinaK [193]

Answer:

Step-by-step explanation:

because 12 inches is one foot so there’s 6 feet per 6 feet of ribbon and there’s 10 of these ribbons so 6 times 10 is 60

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3 years ago

Please answer this math question!! 20 points and brianliest !! Thank u !!

dolphi86 [110]

Answer:

x = 2

y = 2

Step-by-step explanation:

y = 3x-4

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-3x+y = -4

2x + y = 6

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3 years ago

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