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2 years ago

Please help test all i can say

Mathematics

1 answer:

faust18 [17]2 years ago

3 0

Answer:

The answer is 3. Distributive property. Please mark as brainliest.

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There are four classes of third graders at Woodbury Elementary School. One class has 24 students, one has 26 students, another h

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<span>The answer to this problem is B. 24 + 26 + 31 + 22. </span>

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3 years ago

Read 2 more answers

Solve the quadratic equation by completing the square x^2+5x-3=0

PIT_PIT [208]

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

${\tt{ x = \frac{ - 5±\sqrt{{5}^{2} - 4 \times 1 \times ( - 3)} }{2 \times 1} }}$

${\tt{x = \frac{ - 5±\sqrt{25 + 12} }{2} }}$

${\tt{x = \frac{ - 5 ±\sqrt{37} }{2} }}$

$\: \:$

${\tt{x = \frac{ - 5 + \sqrt{37} }{2} }}$

${\tt{x = \frac{ - 5 - \sqrt{37} }{2} }}$

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2 years ago

In order for Sean to earn a B in his Algebra 1 course, his test scores must average at least 80%. On the

inn [45]

Assuming that the exam weight is 100, you would need at least an 80 on the test

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3 years ago

How you would write an expression that shows the cost to rent the bicycle for d days.

Tema [17]

C= total cost
d= number of days
r= rental cost

C= r * d
C= rd

Example:
If it cost $10 per day and you rented for 5 days, the total cost would be:
C= ($10)(5)
C= $50

Hope this helps! :)

4 0

3 years ago

Easter island is roughly triangular in shape. The height of the triangle is 7 mi less than the base. The area is 60 mi^2. Find t

lesantik [10]

Answer:

Base of Island = 15 m, Height = 8 m

Step-by-step explanation:

Here, let the base of the triangular island = b meters

So, the height of the region = (b-7) m

Area of the island = 60 sq.meters

Now, Area of the Triangle $= \frac{1}{2} \times \textrm{Base x Height}$

or, $60 m^{2} = \frac{1}{2} \times b \times (b-7)$

or, 120 = b(b-7)

⇒ $b^{2} - 7b - 120 = 0 \implies b^{2} -15b+ 8b -120=0$

or, b(b-15)+8(b-15) = 0

⇒(b-15)(b+8) = 0

Solving this, we get either b = 15 m , or b = -8m

But as b is the base of the triangle , so b CANNOT BE NEGATIVE.

⇒ b ≠ -8 m

Hence, Base of Island = b = 15 m

and Height = b -7 = 15 - 7 = 8 m

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3 years ago