1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marysya12 [62]
4 years ago
10

Katalina is solving algebraic expressions for her math homework. She solves the problem 7y -12, when y = 3. Katalina says that t

he answer is 61. Is she correct? How do you know?
Mathematics
1 answer:
Tomtit [17]4 years ago
7 0

Answer:

No

Step-by-step explanation:

Substitute 3 in for y

7y-12

7(3)-12

21-12

9

She is not correct, the correct answer would be 9

You might be interested in
At a baseball game a vender sold a combined total of 188 sodas and hotdogs. The number of hot dogs sold was 30 less that the num
Stells [14]
H = s-30
188 = h+s
188 = s-30+s
188= 2s-30
218 = 2s
109 = s

109-30 = 79

109 sodas
79 hot dogs

check:
109+79=188
7 0
4 years ago
if 125 men can do a piece of work in 120days, how many men would be sufficient to do the same work in 100days?​
aivan3 [116]

Answer:

x =150 men

Step-by-step explanation:

Think of the total as workdays

125men* 120days = 15000 workdays

We still need 15000 workdays

100 days * x = 15000workdays

Divide by 100

x = 15000/ 100

x =150 men

6 0
3 years ago
Read 2 more answers
Find the volume of this sphere.<br> Round to the nearest tenth.<br> 16 ft<br> [ ? ] ft3
erastovalidia [21]

Answer:

<h2><em>2</em><em>1</em><em>4</em><em>4</em><em>.</em><em>7</em><em> </em><em>ft^</em><em>3</em></h2>

<em>Sol</em><em>ution</em><em>,</em>

<em>Diam</em><em>eter</em><em> (</em><em>d</em><em>)</em><em>=</em><em>1</em><em>6</em><em> </em><em>ft</em>

<em>Radius</em><em>(</em><em>r</em><em>)</em><em>=</em><em>8</em><em> </em><em>ft</em>

<em>Volume</em><em> </em><em>of</em><em> </em><em>sphere</em>

<em>=  \frac{4}{3} \pi \:  {r}^{3}  \\  =  \frac{4}{3}  \times 3.14  \times  {8}^{3}  \\  =  \frac{4}{3}  \times  3.14 \times 512 \\  = 2144.7 \:  {ft}^{3}</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em>

3 0
3 years ago
Can someone help me with my last question
slega [8]
What you need to do is that you plug p=3 into the expression [(5.4p+5)+(8+3.2p)]/2 and you have:
[(5.4*3+5)+(8+3.2*3)]/2
= (21.2+ 17.6)/2
= 38.8/2
= 19.4

The average of the two boys' points is p=3 is 19.4 points~

4 0
3 years ago
Pls someone help me with this question pls
yuradex [85]
Yo im sorry but I can’t help I’m jus trying to answer questions so I can ask them
4 0
3 years ago
Read 2 more answers
Other questions:
  • Nina saves 40% of her summer job earnings for college. This summer, she earned $200 more than last summer, and she saved $900. W
    13·1 answer
  • 1: Why is the graph misleading?
    10·1 answer
  • Which pair of ratios form a proportion?
    7·2 answers
  • Someone help me on all 4 pleade
    5·2 answers
  • What is the equation for x+1, x+2, x+3
    13·1 answer
  • On January 1, 2020 the high temperature was 63 degrees fahrenheit in Oakley, California. The low in the evening was -30 degrees.
    5·1 answer
  • Drag each tile to the correct box.
    7·1 answer
  • Which graph represents the following system of inequalities ?
    8·2 answers
  • Give the coordinates of point D.<br><br><br> A. (-2,-4)<br> B. (-4,2)<br> C. (-4,-2)<br> D. (4, -2)
    12·1 answer
  • The marks obtained by students are 10, 13, 12, 15, 25, 30, 20, 35, 40, 18. Calculate the median mark. ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!