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cupoosta [38]
2 years ago
13

PLZ HELP WILL MARK BRAINIEST

Mathematics
1 answer:
Lady_Fox [76]2 years ago
3 0
It will be: D

-3 x -5/2 = 15/2, which is 7 1/2
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Student Produced Response - Calculator
faltersainse [42]

Answer:

\dfrac{a}{b}=0.75.

Step-by-step explanation:

If two equations a_1x+b_1y+c_1=0 and a_2x+b_2y+c_2=0 has infinitely many solutions, then

\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}

The given equations are

ax+by=10

3x+4y=20

It is given that the above system of equations has infinitely many solutions. So,

\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{10}{20}

\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{1}{2}

Now,

\dfrac{a}{3}=\dfrac{1}{2} and \dfrac{b}{4}=\dfrac{1}{2}

a=\dfrac{3}{2} and b=\dfrac{4}{2}

a=1.5 and b=2

So, a=1.5 and b=2.

Now,

\dfrac{a}{b}=\dfrac{1.5}{2}=0.75

Therefore, \dfrac{a}{b}=0.75.

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3 years ago
Solve triangle ABC if AB=24.6, BC=29.7, and CA=30
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Triangle ABC equals 84.3
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Which graph represents the solution set of the inequality x+226?
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Step-by-step explanation:

4 0
3 years ago
At a ski resort, 1/4 of the 300 skiers are beginners, and 1/4 of the 260 snowboarders are beginners. The resort staff used the d
Evgen [1.6K]

\frac{1}{4}(300 + 260) = \frac{1}{4} \times 300 + \frac{1}{4} \times 260 is the expression that demonstrates the distributive property

<em><u>Solution:</u></em>

Given that,

At a ski resort, \frac{1}{4} of the 300 skiers are beginners

\frac{1}{4} of the 260 snowboarders are beginners

The resort staff used the distributive property to make the calculation of the total number of beginners on the ski slopes

Beginners in skiers = \frac{1}{4} of the 300

Beginners in snowboarders = \frac{1}{4} of the 260

Total number of beginners = Beginners in skiers + Beginners in snowboarders

\text{ Total number of beginners } = \frac{1}{4}(300) + \frac{1}{4}(260)

We have to use distributive property

The distributive property of multiplication states that when a number is multiplied by the sum of two numbers, the first number can be distributed to both of those numbers and multiplied by each of them separately, then adding the two products together for the same result as multiplying the first number by the sum

<h3>a(b + c) = ab + bc</h3>

<em><u>Therefore, our expression is:</u></em>

\frac{1}{4}(300) + \frac{1}{4}(260)

We have to take \frac{1}{4} as common term to get distributive property

\frac{1}{4}(300) + \frac{1}{4}(260) = \frac{1}{4}(300 + 260)\\\\\frac{1}{4} \times 300 + \frac{1}{4} \times 260 = \frac{1}{4}(300 + 260)

Thus distributive property is applied

8 0
2 years ago
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