All categories

3 years ago

How many different three-digit numbers between 100 and 1,000 have 5 as the tens digit?

1 answer:

6 0

Those are the ones that are in 50s or
50,51,52,53,54,55,56,57,58,59
10 numbers per hundred

150
250
350
450
550
650
750
850
950

9 of the hundreds
10 per each
9 times 10=90

so there are 90 of them

You might be interested in

9y-36=-15x in Slope intercept form

vodka [1.7K]

Look in the file below

6 0

3 years ago

Read 2 more answers

A 92 ft path cuts diagonally from Mateo St. to Cove St. It makes an angle of 68° with Cove St. and an angle of 34° with Mateo St

ohaa [14]

Answer:

41.802 feet

Step-by-step explanation:

Given that a 92 ft path cuts diagonally from Mateo St. to Cove St. It makes an angle of 68° with Cove St. and an angle of 34° with Mateo St.

We can visualize a triangle formed by the three streets One side is 92 feet.

Angle opposite 92 feet = $180-68-34 = 78$

Let x be length of Cove st and y length of Mateo st.

Using sine angle for triangles,

$\frac{92}{sin 78} =\frac{x}{sin 34} =\frac{y}{sin 68}$

Simplify to get

x=52.595

y=87.207

Distance saved= $x+y-92\\= 139.802-92\\=41.802$

7 0

3 years ago

Read 2 more answers

The area of a rectangular wall of a barn is 140 square feet. Its length is 6 feet longer than twice its width. Find the length a

timofeeve [1]

$l*w=140$
$l=2w+6)$
$(2w+6)*w=2w ^{2} +6w=140$
$70=w^2+3w$
$70=w(w+3)$
w=7
$l=2(7)+6$
$l=20$

7 0

2 years ago

Two positive, consecutive, odd integers have a product of 143.

zhannawk [14.2K]

Answer:

<em>The answer is 13</em>

Step-by-step explanation:

Two positive and consecutive old numbers are x and x - 2.

=> x(x - 2) = 143

=> x^2 - 2x - 143 = 0

=> x^2 + 11x - 13x - 143 = 0

=> x(x + 11) - 13(x + 11) = 0

=> (x + 11)(x - 13) = 0

=> x = -11 (invalid)

or x = 13 (valid), the remaining number is 13 - 2 = 11

=> The two numbers are 11 and 13, and the greater number is 13.

Hope this helps!

7 0

3 years ago

Use the digits 2, 3, and 5 to create a fraction and a whole number with a product greater than 2

kupik [55]

The fractions which cannbe formed are: 2/3, 3/2, 2/5, 5/2, 3/5 and 5/3.
Now, we find the products with the third number:
2/3*5= 10/3 = 3.33 > 2
3/2*5 = 15 >2= 7.5 > 2
2/5*3= 6/5 (rejected)
5/2*3 = 15/2 > 2
3/5*2= 6/5 (rejected)
5/3*2 = 15/2 = 7.5> 2

5 0

2 years ago

Read 2 more answers