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timurjin [86]
3 years ago
11

23 times 67 estimated

Mathematics
1 answer:
Llana [10]3 years ago
8 0
Estimate : 23 × 67

20 (lower down, lower than 5...the last digit) × 70 (Higher, higher than 5)

=20×70
=1400

The estimated value will be 1400
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If 2x – 10y = -1 and 5x + 6y = 4 are true equations, what would be the value<br> of 7x - 4y?
Zigmanuir [339]

Answer:

Step-by-step explanation:

If the equations are true, they can be solved simultaneously.

Consider 2x-10y=-1 as Eq1 and 5x+6y=4 as Eq2

Multiplying Eq1 with 3 and Eq2 with 5 we get,

6x-30y=-3 -- Eq3 and 25x+30y=20 -- Eq4

Adding Eq3 and Eq4,

31x=17 Therefore, x=17/31

Plugin x=17/31 in Eq3,

6(17/31)-30y=-3 --- y=13/62

Plug In values of x and y in 7x-4y we get,

7(17/31)-4(13/62) = 3

So the value of 7x-4y = 3.

8 0
2 years ago
What is the measure of the angle?<br> picture added
Doss [256]

Answer:

53

Step-by-step explanation:

the outer measurements are the correct one

7 0
3 years ago
What is the length of the diagonal of the square shown below?
Tatiana [17]

Answer:

sqrt(50)

Step-by-step explanation:

Since it is a right triangle, we can apply the Pythagorem Theorem.

a^2 + b^2 = c^2

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6 0
3 years ago
Read 2 more answers
What is the vertex of f(x)=x^2+12x=31
Ket [755]

Answer:

x

=

±

√

5

−

6

Decimal Form:

x

=

−

3.76393202

…

,

−

8.23606797

…

Step-by-step explanation:

3 0
2 years ago
Please help me with this problem.
aliya0001 [1]
It’s basically 100 multiplied by 2 so 200
3 0
3 years ago
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