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tekilochka [14]
2 years ago
10

3(5z-7)+2(9z-11)=4(8z-7)-111

Mathematics
2 answers:
NISA [10]2 years ago
5 0
3(5z - 7) + 2(9z - 11) = 4(8z - 7) - 111
15z - 21 + 18z - 22 = 32z - 28 - 111
33z - 43 = 32z - 139
33z - 32z = -139 + 43
z = - 96
nika2105 [10]2 years ago
3 0
Hey there, Lets solve this together. 

3(5z - 7) + 2(9z - 11) = 4(8z - 7) - 111

15z - 21 + 18z - 22 = 32z - 28 - 111

33z - 43 = 32z - 139

33z - 32z = -139 + 43

z = - 96

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I’m stuck on number 8 plz help anyone !!
levacccp [35]

Answer:

Sally's km/h during the first half hour is 7 .

<em>The lowest average speed is between the 3rd and 4th stops.</em>

Step-by-step explanation:

On the table during the first half hour, Sally traveled 7 km.

From the first stop to the second stop, she traveled 8 km; from the second stop to the third stop, she traveled 6 km; from the third stop to the fourth stop, she traveled 3 km; from the fourth stop to the fifth stop, she traveled 4 km; and from the fifth stop to the sixth stop she traveled 8 km. Therefore The lowest average speed is between the 3rd and 4th stops.

<em />

<em>Plz rate Brainliest because this took a long time.</em>

8 0
3 years ago
Can anyone help me with this math stuff? I will give you 15 points please help me
denpristay [2]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The ice cream parlor serves spherical scoops of ice cream with a radius of 1 in. What is the approximate volume of 2 scoops of i
Varvara68 [4.7K]

Answer: 8.37 in³

Step-by-step explanation:

Given the following :

Shape of icre cream scoop = sphere

Radius (r) = 1 inch

Volume of a scoop of icecream = volume of sphere :

4/3πr³

(4/3) × 3.14 × 1³

1.333 × 3.14 × 1

= 4.1867 in³

Hence, the volume of 2 scoops of ice cream will be :

2 × ( volume of a scoop of ice cream)

(2 × 4.1867) in³

= 8.37 in³

6 0
2 years ago
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Vikentia [17]

No they are not similar because on is bigger

5 0
2 years ago
Answer these 3 questoins
chubhunter [2.5K]

Answer:

b) m = 1/2

c) m = 3

d) m = 1/3

Step-by-step explanation:

b) rise = 1, run = 2; m = rise/run, so m = 1/2

c) rise = 3, run = 1; m = rise/run, so m = 3

d) rise = 1, run = 3; m = rise/run, so m = 1/3

5 0
2 years ago
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