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inysia [295]
3 years ago
7

3. If 15 x+20' what is the value of? X

Mathematics
2 answers:
guapka [62]3 years ago
6 0
If 15=x+20 then x=-5
arsen [322]3 years ago
3 0
The awnser is x=-5 from the given
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17) please help with this question!!!<br> BraiNLIEST AND 20 POINTS :)
valentinak56 [21]

Answer:

A

Step-by-step explanation:

8 gallons of regular gas with 10% and 2 gallons with 85%

8 x 10 =80%

2 x 85 =170%

170+80=250%

10 gallons each with 100%, so 10 x 100 =1000%

250% of 1000% = 1/4 or 25% ethanol

Hope this helps!

4 0
3 years ago
Population Growth The population of a town of 5000
Nesterboy [21]

Answer:

a) A=5000{(1.03)}^{t}

b) 5464 inhabitants.

Step-by-step explanation:

The formula used for compound interest becomes very helpful in this case.

A=P{(1+r)}^{t}\\\\When:\\A = Final Value\\P = Initial Value\\r = Rate of Change (Decimal)\\t = Time (Years)

Knowing this, we can easily calculate the value for any year, counting from the original 5000.

From this formula, we can derive a specific one that will serve for any value of <em>t</em>.

a)

A=5000{(1+0.03)}^{t}\\A=5000{(1.03)}^{t}

b) Apply the formula:

A=5000{(1.03)}^{3}\\A=5000(1.092727)\\A=5463.635=5464

The town will have 5464 inhabitants.

5 0
3 years ago
Brad buys two packages of mushrooms. He paid $11.25 for 2/3 lb of Cremini mushrooms and $7.99 for 1/2 lb of Chanterelle mushroom
vlabodo [156]

Answer:

C. (Chanterelle mushrooms cost less by $0.90)

Step-by-step explanation:

Divide 11.25 by 2/3, for the total amount of pound for the Cremini.

Do the same thing for Chanterelle, but the numbers given for it.

We than find out that Cremini=16.87, and Chanterelle=15.98

Now that we know Cremini is more that Chanterelle, we need to find the difference, by subtracting The bigger number by the smaller number.

Our answer is 0.89, but we will round it to 0.90.

Now we know that the Cremini costs more by $0.90, and the Chanterelle costs less by $0.90

5 0
3 years ago
Read 2 more answers
Maya sells beaded necklaces. Each large necklace sells for $6.10 and each small necklace sells for $4.80 . How much will she ear
balandron [24]

Answer:

$49.70

Step-by-step explanation:

6.10x5+4.80x4=$49.70!

7 0
3 years ago
Find the probability that a student is not playing a sport or not taking a foreign
Gelneren [198K]

Answer:

18/25

Step-by-step explanation:

Total number of students = 23+14+10+3 = 50.

14 out of 50 are playing sport and taking a foreign language.

So the answer is (50 - 14) / 50

= 36/50

= 18/25.

3 0
3 years ago
Read 2 more answers
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