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Dafna11 [192]
3 years ago
13

Which value is equivalent to 15 − 4 × 2? A) 2 B) 7 C) 9 D) 23

Mathematics
2 answers:
BigorU [14]3 years ago
7 0

Answer:

B

Step-by-step explanation:

You need to do 4*2 which is 8. Then you need to subtract 15-8 to get 7.

Hope this helps.

Nastasia [14]3 years ago
4 0

Answer

D because i had it before

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In a pen of goats and chickens, there are 40 heads and 150 feet. How many goats and chickens are in the pen?
s2008m [1.1K]

Hey there!!

A chicken has 1 head and 2 feet . A goat has 1 head and 4 feet

For heads, total = 40

Let us take the number of chickens as ' x ' and goats as ' y '

x + y = 40 ------------- ( 1 )

2x + 4y = 150 ----------- ( 2 )

Multiply the first equation with 2

2x + 2y = 80

2x + 4y = 150

Subtract the first equation from the first

2y = 70

y = 35

Number of goats = 35

substitute this in other equation

x + y = 40

x + 35 = 40

x = 5

Number of chickens are 4

Hope it helps!

6 0
3 years ago
Please list a reason why scientific notation is important thank youuu !!
otez555 [7]

The primary reason why scientific notation is important is that it allows us to convert very large or very small numbers into much more manageable sizes. When these numbers are in scientific notation, it is much easier to work with them
6 0
2 years ago
Combine like terms in the following expression:<br> 3x 10 - 5x + 10<br><br> Your answer:​
Allushta [10]

Answer:

= -2x

Step-by-step explanation:

3x and -5x are like terms and -10 and 10 are also like terms. like terms can be added together

= -2x cause the 10's cancel out

4 0
3 years ago
9. Raju sells a watch at 5% profit. Had he sold it for 24 more he would have gained 11%. Find the cost price of the watch.​
Ede4ka [16]

Answer:

400$

Step-by-step explanation:

Let C.P. of the watch = Rs. 100

When profit =5%; S.P. = Rs. (100+5)

= Rs. 105

and when profit = 11%;

S.P. = Rs. (100+11)

=Rs.111

Difference of two selling prices

= Rs. 111-Rs.105 = Rs.6

When watch sold for Rs. 6 more; then C.P. of the watch = Rs.

100

6

When watch sold for Rs. 24 more; then C.P. of the watch = Rs.

100

6

×

24

= Rs.

100

×

24

6

=400

7 0
2 years ago
The size your dog and the number of times you take it to the vet, The amount your drive to school and the amount you have to pay
Naddik [55]

Answer:

Negative, i think

5 0
3 years ago
Read 2 more answers
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