ACT Math Practice Test 13

Bộ sưu tập: Tuyển Tập Bộ Đề Thi Đại Học Hoa Kỳ (ACT) - Có Đáp Án Chi Tiết

Số câu hỏi: 20 câuSố mã đề: 1 đềThời gian: 1 giờ

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Câu 1: 1 điểm

What is the y-coordinate of the point in the standard (x,y) coordinate plane at which the 2 lines y = x2 + 3 and y = 3x − 2 intersect?

A.  

5

B.  

4

C.  

3

D.  

2

E.  

1

Câu 2: 1 điểm

When the choir is arranged in rows of 5 people each, the last row is one person short. When the choir is arranged in rows of 6 people each, the last row is still one person short. What is the least possible number of people in the choir?

A.  

29

B.  

30

C.  

56

D.  

60

E.  

99

Câu 3: 1 điểm

The hypotenuse of the right triangle ABC shown below is 17 feet long. The cosine of angle C is 35. How many feet long is the segment AC?

Hình ảnh

A.  

6

B.  

10.2

C.  

12

D.  

15

E.  

28.3

Câu 4: 1 điểm

After excavating a lot, workers removed an estimated 7,000 cubic yards of dirt from the area. If this dirt were spread in an even layer over an empty lot with dimensions 30 yards by 64 yards, about how deep, in yards, would the layer of dirt be?

A.  

Less than 1

B.  

Between 1 and 2

C.  

Between 2 and 3

D.  

Between 3 and 4

E.  

More than 4

Câu 5: 1 điểm

For the right triangle ΔABC shown below, what is sin C?

Hình ảnh

A.  

a⁄b

B.  

a⁄c

C.  

b⁄a

D.  

c⁄b

E.  

c⁄a

Câu 6: 1 điểm

What is the area, in coordinate units, of the triangle in the figure below?

Hình ảnh

A.  

4.5

B.  

9.0

C.  

10.0

D.  

12.5

E.  

20.0

Câu 7: 1 điểm

A shoe store charges $39 for a certain type of sneaker. This price is 30% more than the amount it costs the shoe store to buy one pair of these sneakers. At an end-of-theyear sale, sales associates can purchase any remaining sneakers at 20% off the shoe store’s cost. How much would it cost an employee to purchase a pair of sneakers of this type during the sale (excluding sales tax)?

A.  

$31.20

B.  

$25.00

C.  

$24.00

D.  

$21.84

E.  

$19.50

Câu 8: 1 điểm

If the volume of a cube is 64, what is the shortest distance from the center of the cube to the base of the cube?

A.  

2

B.  

4

C.  

2√4

D.  

32\sqrt{32}

E.  

16

Câu 9: 1 điểm

What is the slope-intercept form of 9x + 3y − 6 = 0?

A.  

y = 9x − 6

B.  

y = 3x + 2

C.  

y = 3x − 2

D.  

y = −3x + 2

E.  

y = −9x + 6

Câu 10: 1 điểm

If nx · n8 = n24 and (n6)y = n18, what is the value of x + y?

A.  

7

B.  

9

C.  

12

D.  

19

E.  

27

Câu 11: 1 điểm

In the figure below, ABCD is a trapezoid. Point E lies on line AD, and angle measures are as marked. What is the measure of angle BDC?

Hình ảnh

A.  

25°

B.  

30°

C.  

45°

D.  

55°

E.  

100°

Câu 12: 1 điểm

The average of 7 consecutive numbers is 16. What is the sum of the least and greatest of the 7 integers?

A.  

13

B.  

14

C.  

16

D.  

19

E.  

32

Câu 13: 1 điểm

A circle is circumscribed within a square with sides of 12 feet, as shown below. What is the area of the circle, to the nearest square foot?

Hình ảnh

A.  

144

B.  

113

C.  

72

D.  

12π

E.  

Câu 14: 1 điểm

When x is divided by 7, the remainder is 4. What is the remainder when 2x is divided by 7?

A.  

1

B.  

4

C.  

5

D.  

7

E.  

8

Câu 15: 1 điểm

The product of two integers is between 137 and 149. Which of the following CANNOT be one of the integers?

A.  

15

B.  

13

C.  

11

D.  

10

E.  

7

Câu 16: 1 điểm

In the (x, y) coordinate plane, what is the y-intercept of the line −9x − 3y = 15?

A.  

−9

B.  

−5

C.  

−3

D.  

3

E.  

15

Câu 17: 1 điểm

In the figure below, XY\overline{XY} = YZ\overline{YZ} . If a = 40◦, than XY\overline{XY} =?

Hình ảnh

A.  

9.50

B.  

8.75

C.  

7.75

D.  

6.25

E.  

5.50

Câu 18: 1 điểm

In the figure below, the perimeter of the triangle is 12+4√3 inches. What is the value of x, in inches?

Hình ảnh

A.  

2

B.  

4

C.  

6

D.  

8

E.  

12

Câu 19: 1 điểm

For all pairs of real numbers M and N where M = 6N + 5, N = ?

A.  

M⁄6 − 5

B.  

M⁄5 + 6

C.  

6M + 5

D.  

M56\frac{M-5}{6}

E.  

M+56\frac{M + 5}{6}

Câu 20: 1 điểm

Points B and C lie on segment AD as shown below. Segment AD is 32 units long, segment AC is 23 units long, and segment BD is 27 units long. How many units long, if it can be determined, is segment BC?

Hình ảnh

A.  

21

B.  

18

C.  

9

D.  

4

E.  

Cannot be determined from the given information.


 

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