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3 years ago

4= t/2.5 t=? this is mathematics

Mathematics

2 answers:

nirvana33 [79]3 years ago

6 0

Answer:

4=t/2.5

*2.5 on both sides

10=t

Hope this helps!

-mark as brianliest-

taurus [48]3 years ago

4 0

Answer:

Step-by-step explanation:

$4=\dfrac{t}{2.5}\qquad\text{multiply both sides by 2.5}\\\\4\cdot2.5=\dfrac{t}{2.5\!\!\!\!\!\diagup}\cdot2.5\!\!\!\!\!\diagup\qquad\text{cancel 2.5}\\\\10=t\to t=10\\\\\text{Check:}\\\\\dfrac{10}{2.5}=4\qquad\bold{CORRECT}$

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Alyssa took a math test for 20 questions and she answered 16 questions correctly in order to get an a she needs to answer at lea

Elenna [48]

Answer:

She did not qualify the exam.

Step-by-step explanation:

Given data

Total no of question in a test = 20

No. of question answered correctly = 16

Percentage of question answered correctly

$(\frac{16}{20}) 100 = 80$

But in order to get in the exam the student must have to score at least 90 %. But she got only 80 % so she did not qualify the exam.

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3 years ago

In the given figure find the value of x and y?<br>Show you works - Thank you!

Vaselesa [24]

<u>EXPLANATION</u><u>:</u>

In ∆ ABC , ∠ABC = 40°

∠CAB = x°
& ∠ACD = 50°

∠ACD is an exterior angle formed by extending BC to D

We know that

The exterior angle of a triangle formed by extending one side is equal to the sum of the opposite interior angles.

∠ACD = ∠CAB + ∠ABC

⇛50° = x° + 40°

⇛x° = 50°-40°

and

In ∆ ACD , AC = CD

⇛ ∠CDA = ∠CAD

Since the angles opposite to equal sides are equal.

Let ∠CDA = ∠CAD = A°

We know that

The sum of all angles in a triangle is 180°

In ∆ ACD,

∠CDA +∠CAD + ∠ACD = 180°

A°+A°+50° = 180°

⇛2A°+50° = 180°

⇛2A° = 180°-50°

⇛2A° = 130°

⇛A° = 130°/2

⇛A° = 65°

now,

∠CDA = ∠CAD = 65°

∠BAC + ∠CAD+y = 180°

Since angles in the same line

10°+65°+y = 180°

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2 years ago

Which graph shows the result of dilating this figure by a factor of 3 about the origin?

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3 years ago

Read 2 more answers

Find the slope of the line that contains (-2,-2) and (-10,-9)

andrey2020 [161]

Answer:

$\huge \frac{7}{8} \\$

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

$m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\$

From the question we have

$m = \frac{ - 9 - - 2}{ - 10 - - 2} = \frac{ - 9 + 2}{ - 10 + 2} = \frac{ - 7}{ - 8} = \frac{7}{8} \\$

We have the final answer as

$\frac{7}{8} \\$

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7 0

2 years ago

A designer is creating various open-top boxes by cutting four equally-sized squares from the corners of a standard sheet of 8.5

Oxana [17]

Answer:

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Step-by-step explanation:

If a square of x sides length is cut from each corner of the sheet, then it meas the length and width of the box a shortened by x inces from each side, giving a total subtraction of 2 times x inches.

FORMULA FOR LENGTH:

Since, Length is the bigger side of the box. Therefore, it will be taken on 11 inches side of the paper:

FORMULA FOR WIDTH:

Since, width is the smaller side of the box. Therefore, it will be taken on 8.5 inches side of the paper:

FORMULA FOR VOLUME:

Volume is the product of length, width and time:

V(x) = L(x)*W(x)*H(x)

Height must be equal to the side folds which are equal to length of the side of square = x:

H(x) = x

Therefore,

V(x) = (11 - 2x)(8.5 - 2x)(x)

V(x) = (93.5 -22x -17x + 4x²)(x)

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3 years ago