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poizon [28]
3 years ago
11

PLEASEEEE answer!!!! NEED THIS TO GRADUATE

Mathematics
1 answer:
KengaRu [80]3 years ago
8 0

Answer:

number of students with blue eyes and blond hair= 42

Number of students with grey eyes and brown hair= 5

Difference of number of kids with grey eyes and brown hair and the number of students with green eyes and black hair =6

Difference of the number of students with green eyes and blond hair and the number of students with grey eyes= 14

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4x+11y=7<br><br>4x+3y=-1<br>what are the steps
andreev551 [17]

Answer:

x = -1, y = 1

Step-by-step explanation:

Given that:

\begin{bmatrix}4x+11y=7\\ 4x+3y=-1\end{bmatrix}

Isolate x for 4x + 11y = 7 which ⇒ x=\frac{7-11y}{4}

Substitute x=\frac{7-11y}{4} into the equation: which is:

\begin{bmatrix}4\cdot \frac{7-11y}{4}+3y=-1\end{bmatrix}

Drop Down to:

\begin{bmatrix}7-8y=-1\end{bmatrix}

Isolate y for 7-8y = -1: y = 1

Thus, x=\frac{7-11y}{4}

Substitute y = 1

Hence,

x=\frac{7-11\cdot \:1}{4}=-1

Solution ⇒ x = -1 and y = 1

<u><em>~learn with lenvy~</em></u>

6 0
2 years ago
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If this trapezoid is moved through the translation (x-1,y+1) what will the coordinates of A' be
elena-s [515]

If the traslation is T(x,y)=(x-1,y+1) then:

T(-6,2)=(-6-1,2+1)=(-7,3)

Therefore A'=( -7,3).

6 0
1 year ago
What is the scintific notation of 4,497,000,000
Diano4ka-milaya [45]
4,497,000,000 = <span>4.497 x 10^9</span>
4 0
3 years ago
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Find the area of the triangle.
Maslowich

Answer:

Area of triangle = 1/2*b*h

\frac{1}{2} * 2.8* 7.8\\\frac{1}{2} * 21.84\\\frac{21.84}{2}\\= 10.92

4 0
3 years ago
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A car manufacturer wants to analyze the safety features of 7 different car models by comparing each model with every other model
klio [65]

Answer:

28,000

Step-by-step explanation:

multiply 7 cars with 4,000

8 0
3 years ago
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