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victus00 [196]
3 years ago
15

Please help asap !!!!!! what vaule of x makes the equation true 3(x-4)=15

Mathematics
1 answer:
DaniilM [7]3 years ago
5 0

3(x-4) = 15

Distribute the 3:

3x-12 = 15

Add 12 to both sides:

3x = 27

Divide both sides by 3:

X = 9

The answer is D. 9

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An element with mass 590 grams decays by 19.5% per minute. How much of the
notsponge [240]

22.8 gms

Step-by-step explanation:

Step 1:

Given,

Mass of the element = 590 gms

Percentage decay per minute = 19.5%

Step 2 :

Fraction of the element remaining at the end of 1 minute = 1 - 0.195 = 0.805

Hence the fraction of element remaining after 15 minutes  = 0.805^{15} = 0.03863

So the mass of the element remaining after 15 minutes = 0.03863 * 590 = 22.8 rounded off to the nearest 10th of a gram

mass of the element remaining after 15 minutes = 22.8 gms

6 0
4 years ago
Look at pic down underrr
dimulka [17.4K]

Answer:

Triangle rsu = Triangle tus

Statements Reasons

UR ≅ TS  Definition of Rectangle

US ≅ US Reflexive Property

<U, <T, <R, <S are all congruent and right angles

Definition of Rectangle

ΔRSU ≅ ΔTUS Side, Angle, Side

UR ≅ TS     CPCTC

Just draw a reverse angle,hence you get comparison.

So, satisfying S-S-S

RUS  ≅ SUT

RSU ≅ TUS

So, angle

URS = angle TUS

2. Pythagoras Theorem

Triangle RUS

A^2 + B^2 = C^2

Uu^2 + Ss^2 = Rr^2

√Rr = Rr^2 = x

Triangle TUS

A^2 + B^2 = C^2

Ss^2 + Uu^2 = Tt^2

√Tt = Tt^2 = x

UR measure / sin (60) x (90) = US measure.

ST measure / sin (60) x (90) = US measure.

Proves angles RSU = 30 degree

Proves angles  TUS = 30 degree

As all adjacent angles in a triangle add up to 180 degree.

7 0
3 years ago
Simplify each expression by distributing and combined bf like terms (SHOW WORK) please
GarryVolchara [31]

Answer:

c - 39

Step-by-step explanation:

<em>Given</em><em>,</em>

<em>-</em><em>4</em><em> </em><em>(</em><em>8</em><em> </em><em>-</em><em> </em><em>c</em><em> </em><em>)</em><em> </em><em>-</em><em> </em><em>(</em><em>3</em><em>c</em><em> </em><em>+</em><em> </em><em>7</em><em> </em><em>)</em>

<em>=</em><em> </em><em>-</em><em>4</em><em> </em><em>(</em><em> </em><em>-c </em><em>+</em><em> </em><em>8</em><em> </em><em>)</em><em> </em><em>-</em><em> </em><em>(</em><em>3</em><em>c</em><em> </em><em>+</em><em> </em><em>7</em><em> </em><em>)</em>

<em>=</em><em> </em><em>4</em><em>c</em><em> </em><em>-</em><em> </em><em>3</em><em>2</em><em> </em><em>-</em><em> </em><em>(</em><em> </em><em>3</em><em>c</em><em> </em><em>+</em><em> </em><em>7</em><em> </em><em>)</em>

<em>=</em><em> </em><em>4</em><em>c</em><em> </em><em>-</em><em> </em><em>3</em><em>2</em><em> </em><em>-</em><em> </em><em>3</em><em>c</em><em> </em><em>-</em><em> </em><em>7</em>

<em>=</em><em> </em><em>(</em><em> </em><em>4</em><em> </em><em>-</em><em> </em><em>3</em><em> </em><em>)</em><em>c </em><em>+</em><em> </em><em>(</em><em> </em><em>-</em><em>3</em><em>2</em><em> </em><em>-</em><em> </em><em>7</em><em> </em><em>)</em>

<em>=</em><em> </em><em>c </em><em>+</em><em> </em><em>(</em><em> </em><em>-</em><em>3</em><em>2</em><em> </em><em>-</em><em> </em><em>7</em><em>)</em>

<em>=</em><em> </em><em><u>C </u></em><em><u>-</u></em><em><u> </u></em><em><u>3</u></em><em><u>9</u></em>

<em><u>hope </u></em><em><u>this </u></em><em><u>answer </u></em><em><u>helps </u></em><em><u>you </u></em><em><u>dear!</u></em><em><u> </u></em><em><u>take </u></em><em><u>care!</u></em>

8 0
3 years ago
-3/7*(-8)= plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Sindrei [870]

Answer:

3.42857143

Step-by-step explanation:

8 0
4 years ago
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How do u find the rule of this problem
tatyana61 [14]

Answer:

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8 0
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