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jeka57 [31]
3 years ago
8

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5

Mathematics
1 answer:
Semmy [17]3 years ago
8 0

3x + 3y = 72

2y = 28

y = 14

x = 24 - 14 = 10

The test contains 10 three-point questions and 14 five-point questions

please mark me brainliest!

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C
netineya [11]

Answer:

100+90+7

200+20

Step-by-step explanation:

5 0
3 years ago
Two high schools are going on a field trip. One rents 8 vans and 9 buses for 228 students. The other rents 4 vans and 5 buses fo
nevsk [136]

Answer:

No. pp you can fit in a van: 6,

No. pp you can fit in a bus: 20

Step-by-step explanation:

Let v = # of pp in vans, and let b = # of pp in buses:

8v + 9b = 228,

4v + 5b = 124

If we solve this system of equations by substitution, we isolate the first eq. for v and then substitute into the bottom eq:

v = 228-9b/8,

Substitute v = 228-9b/8 into bottom eq:

[4 * 228-9b/8 + 5b = 125]

[228+b/2=124]

[228+b = 248]

[b = 20]

Now substitute 20 to find no. of pp in the vans:

v = 228 - 9(20)/8 = 228  - 180/8 = 48/8 = 6

8 0
3 years ago
Negative 12 - negative 50
seraphim [82]

Answer:

38

Step-by-step explanation:

if you're asking what (-12)-(-50) is the answer is 38 simple method to remember is KCF or KFC same thing just worded differently but it means keep change flip! hope that helped have a great day!!

5 0
2 years ago
If you divided 20acres of land into 1\4 acre section how !any sections doses it divied to
LuckyWell [14K]
If you divide 20 acres into 1/4 sections you'll get
20 ÷ 1/4 sections. When you divide fractions, you just multiply the reciprocal.

20 ÷ 1/4 =
20 × 4/1 = 80 sections
5 0
3 years ago
Ramon uses a metric tape measure to find the circumference of a model globe, as shown below.
igor_vitrenko [27]

Answer:

b

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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