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
Zigmanuir [339]
3 years ago
15

Which of the following equations have z = 4?

Mathematics
1 answer:
evablogger [386]3 years ago
7 0

Answer:

B and D

Step-by-step explanation:

7z -1 = 27 46 - 8z = 14

+1 +1 -46 -46

7z = 28 -8z = -32

/7 /7 /-8 /-8

z = 4 z = 4

You might be interested in
Solve the equation using the zero-product property. (2x − 8)(7x + 5) = 0 x = –2 or x = 7 x = 4 or x = x = 4 or x = x = –4 or x =
aliya0001 [1]

(2x-8)(7x+5)=0\iff2x-8=0\ \vee\ 7x+5=0\\\\2x-8=0\qquad\text{add 8 to both sides}\\2x=8\qquad\text{divide both sides by 2}\\\boxed{x=4}\\\\7x+5=0\qquad\text{subtract 5 from both sides}\\7x=-5\qquad\text{divide both sides by 7}\\\boxed{x=-\dfrac{5}{7}}

5 0
3 years ago
Solve please I do not understand at all and please show work!
lina2011 [118]
So the recipe calls for 96 grams of sugar, and one cup is 128 grams of sugar.

She added a half of a cup, and as they said before one cup was 128 grams of sugar. So half of 128 is 64. So she added 64 grams of sugar. The recipe needs 96 grams so 64 grams is not enough sugar.

So 96 grams minus 64 equals 32 grams. So she still needs 32 grams of sugar.

So since the answers are all in cups, we must convert our answer from grams to cups.

So we have 32 grams of sugar left and to convert it we must put the 32 grams out of one cup. Once again one cup is 128 grams of sugar. So the amount of cups we need is 32/128 (fraction).

Also we need to simplify our fraction to completely answer the question. So we divide the numerator and denominator by 32.

So the final answer is 1/4. So the answer is D or the last answer out of the multiple choice.
8 0
3 years ago
Noah and his friends are going to an amusement park. The total cost of admission for 8 students is $100, and all students share
aliina [53]
Yes, if all 8 of the students shared the cost of $100 dollars equally, that would mean each student paid $12.50.
6 0
3 years ago
Read 2 more answers
Elaina just began working as an occupational therapist assistant for $21.00 per hour. For each paycheck she receives, 12% is ded
lora16 [44]

Answer:

Elaina just began working as an occupational therapist assistant for $21.00 per hour. For each paycheck she receives, 12% is deducted from the gross pay for Federal Withholding Tax. In addition, 1.45% is deducted for Medicare and 6.2% for Social Security. Below is Elaina’s paycheck with missing information.

Elaina’s gross pay for a two week period is $1680.00, what is her net pay?

Step-by-step explanation:

c

3 0
3 years ago
Steven is taking out a loan in the amount of $5,000. His choices are a 3-year loan at 5% simple interest and a 5 -year loan at 4
Andre45 [30]
I do believe it’s 250$

**The first choice:**
Principal: 5,000$
Rate(%): 5
Time(year): 3 years
A: 5,750$

**Second choice**
Principal: 5,000$
Rate(%): 4%
Time(year): 5 years
A: 6,000$

6,000-5,750=250$

Hope this helps!
8 0
3 years ago
Other questions:
  • this past Sunday, the giants scored 9 less than twice the cowboys. the packers scored 14 points more than the giants. if the tea
    12·1 answer
  • 7 less than one-fourth of a number equal to 17. What is the number?
    10·2 answers
  • Trig please help.
    14·1 answer
  • What is the difference? -2/15 -(-9/15) <br> a.-11/15 <br> b. -7/15 <br> c. 7/15 <br> d. 11/15
    9·1 answer
  • Determine if the lines are parallel, perpendicular, or neither.<br> y=-2x – 4<br> 2x + y = 5
    8·1 answer
  • PLEASE HELP IN THE ATTACHED IMAGE
    6·1 answer
  • two adjacent angles form a right angle the larger angle is 3 times the measure of the smaller angle which is the measure of the
    9·2 answers
  • Find the value of x and found to the nearest degree help ASAP
    12·1 answer
  • Valentina planted t fewer trees than Mabel. Mabel planted 91 trees. Write an expression that shows how many trees Valentina plan
    6·1 answer
  • what is the equation of the following line? be sure to scroll down first to see all the answer options
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!